Thursday

April 24, 2014

April 24, 2014

Number of results: 6,394

**Algebra**

A ball is thrown upward with an initial velocity of 14 meters per second from a cliff that is high. The height of the ball is given by the quadratic equation where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the ball will be 30 ...
*Monday, March 4, 2013 at 7:52pm by Sherry*

**Alg 1 quadratic functions**

A baseball player hits a baseball into the outfield. The equation h= -0.005x^2 +x+3 give the path of the ball, where (h) is the height and (x) is the horizontal distance the ball travels. A. What is the equation of the axis of symmetry? It's -100 right? B. What is the Mac ...
*Thursday, October 20, 2011 at 7:06pm by Cole*

**physics**

You are designing a game for small children and want to see if the ball’s maximum speed is sufficient to require the use of goggles. In your game, a 15.0-g ball is to be shot from a spring gun whose spring has a force constant of 600 N/m. The spring will be compressed 5.00 cm ...
*Thursday, March 4, 2010 at 12:45am by bill*

**Physics HELP!!!**

A ball (radius 0.2 m) is rolling on level ground toward an incline. If its velocity is 3 m/s, to what maximum height above the ground does it roll up the incline? The ball is a hollow sphere with a moment of inertia I=(2/3)mr2 (m is the mass of the ball, r its radius).
*Wednesday, October 27, 2010 at 8:51pm by Alex*

**physics**

A ball is projected horizontally from the edge of a table that is 1.15 m high, and it strikes the floor at a point 1.70 m from the base of the table. (a) What is the initial speed of the ball? m/s (b) How high is the ball above the floor when its velocity vector makes a 45.0° ...
*Sunday, November 20, 2011 at 12:39pm by Michaela*

**physics**

A ball is projected horizontally from the edge of a table that is 1.15 m high, and it strikes the floor at a point 1.70 m from the base of the table. (a) What is the initial speed of the ball? m/s (b) How high is the ball above the floor when its velocity vector makes a 45.0° ...
*Sunday, November 20, 2011 at 12:40pm by Michaela*

**science**

A bowling ball weighing 71.3 is attached to the ceiling by a rope of length 3.77 . The ball is pulled to one side and released; it then swings back and forth as a pendulum. As the rope swings through the vertical, the speed of the bowling ball is 5.00 .
*Monday, August 13, 2012 at 6:04am by jewst*

**physics**

A 2.80 kg steel ball strikes a massive wall at 12.8 m/s at an angle of alpha = 50.9° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.156 s, what is the magnitude of the average force exerted on the ball by...
*Friday, February 24, 2012 at 12:08am by Tom*

**Physics**

A) With what minimum speed must you toss a 190 ball straight up to hit the 15.0 -high roof of the gymnasium if you release the ball 1.70 above the ground? Solve this problem using energy. B) With what speed does the ball hit the ground?
*Wednesday, March 20, 2013 at 6:37pm by Jenny*

**Physics**

A) With what minimum speed must you toss a 190 g ball straight up to hit the 15.0 m-high roof of the gymnasium if you release the ball 1.70 m above the ground? Solve this problem using energy. B) With what speed does the ball hit the ground?
*Wednesday, March 20, 2013 at 6:59pm by Jenny*

**physics**

A 50 g ball of clay traveling east at 3.5 m/s collides and sticks together with a 50 g ball of clay traveling north at 2.0 m/s. What is the speed of the resulting ball of clay?
*Sunday, April 18, 2010 at 2:34pm by Sandra*

**Physics - Center of Mass**

A baseball player uses a bat with mass mbat to hit a ball with mass mball. Right before he hits the ball, the bat's initial velocity is 36 m/s, and the ball's initial velocity is -20 m/s (the positive direction is along the positive x-axis). The bat and ball undergo a one-...
*Saturday, June 16, 2012 at 7:44pm by Ray*

**physics**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building with ...
*Monday, February 14, 2011 at 4:14pm by Mark*

**physics**

A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was thrown? not quite ...
*Sunday, October 6, 2013 at 1:28pm by Louis*

**physics**

A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was thrown? not quite ...
*Sunday, October 6, 2013 at 1:29pm by Louis*

**physics**

A 3.12 kg bowling ball traveling at 15.3 m/s to the right collides with a 2.15 kg bocce ball traveling at 7.52 m/s to the right. The final velocity of the bowling ball is 2.33 m/s to the left. Determine the final velocity of the bocce ball. What is the magnitude of the force ...
*Sunday, January 22, 2012 at 2:07am by sand*

**two dimensional kinematics**

A freight train is moving at a constant speed of Vt. A man standing on a flatcar throws a ball into the air and catches it as it falls. Relative to the flatcar, the initial vellocity of the ball is Vib straight up. a. What are the magnitude and direction of the initial ...
*Monday, October 8, 2012 at 1:43am by ringo*

**Physics**

A 120 g ball moving to the right at 4.2 m/s catches up and collides with a 450 g ball that is moving to the right at 1.2 m/s. If the collision is perfectly elastic, what are the speed and direction of each ball after the collision?
*Monday, November 30, 2009 at 2:14pm by Zach*

**physic**

Two spherical balls are placed so their centers are 2.6 m apart. The force between the two balls is 2.75 x 10-12 N. What is the mass of each ball if one ball is twice the mass of the other ball?
*Monday, January 18, 2010 at 11:02am by susan *

**PHYSICS !**

If a ball is sliding down a ramp that is on a slant, so that the ball sliding down falls off. Is the speed of the ball constant(meaning staying at the same speed)? or Speeding up? If so, how?
*Thursday, November 11, 2010 at 5:42pm by Kate*

**physics**

Estimate the force a person must exert on a string attached to a 0.120 kg ball to make the ball revolve in a circle when the length of the string is 0.600 m. The ball makes 1.20 revolutions per second. Do not ignore the weight of the ball. In particular, find the magnitude of ...
*Sunday, February 6, 2011 at 11:53pm by leslie*

**Physics**

A child tosses a baseball to his siter, who is hanging out the window of an apartment building. The ball's initial velocity is 18 m/s upward. (Ignore any horizontal motion) 1. How long will it take for the ball to reach its maximum height? 2. The sister catches the ball 3.0 ...
*Saturday, January 28, 2012 at 12:24am by DENISE*

**Physics**

Which of the following contains the most mechanical energy? A 10 kg ball at the top of a hill 10 meters high A 5 kg ball rolling with a velocity of 12 m/s A 10 kg ball rolling with a velocity of 5 m/s A 5 kg ball at the top of a hill 10 meters high I think it is A
*Wednesday, June 29, 2011 at 12:57am by Jordan*

**Physics**

a 4 kilogram ball moving at 8 meters per second to the right collides with a 1 kilogram ball at rest. After the collision, the 4 kilogram ball moves at 4.8 meters per second to the right. What is the velocity of the 1 kilogram ball?
*Tuesday, March 27, 2012 at 10:24pm by Hellen*

**Physics**

A ball is thrown straight upward and returns to the thrower's hand after 3.40 s in the air. A second ball is thrown at an angle of 29.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically?
*Wednesday, October 13, 2010 at 7:09pm by Sammy*

**physics**

A ball is thrown straight upward and returns to the thrower's hand after 2.20 s in the air. A second ball is thrown at an angle of 31.0° with the horizontal. At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically?
*Thursday, November 18, 2010 at 8:32pm by jennifer*

**math**

how do i work out the following word problem. a particular ball retains half of its heght on each bounce when dropped from a height of 80 m. give the height of the ball on the fifth bounce after being dropped?(will the ball comes to rest?)
*Saturday, May 19, 2012 at 5:54am by ladane*

**Math**

The horizontal range, R, is modeled by this formula: R(x)=(v^2*sin2(x))/32 The initial velocity (v) is 90ft per second. The ball is pitched at an angle of x degrees with the horizontal. When x=26 degrees, the ball travels 200ft. At what other value of x will the ball travel ...
*Saturday, June 16, 2012 at 3:08pm by Amber*

**physics**

A tennis ball rolls off the edge of a tabletop 0.800m above the floor and strikes the floor at a point 1.10m horizontally from the edge of the table. 1) Find the time of flight of the ball. 2) Find the magnitude of the initial velocity of the ball. 3) Find the magnitude of the...
*Saturday, October 9, 2010 at 4:43pm by Anonymous*

**physics**

A ball on the end of a string is whirled around in a horizontal circle of radius 0.22 m. The plane of the circle is 1.69 m above the ground. The string breaks and the ball lands 2.68 m away from the point on the ground directly beneath the ball’s location when the string ...
*Friday, September 9, 2011 at 12:37am by squires*

**physics**

The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net (as shown in the figure below). Suppose that you loft the ball with an initial speed of v = 15.6 m/s, at an...
*Sunday, January 22, 2012 at 11:30pm by katie*

**Fly Ball Lab - Projectile Motion Please HELP FAST!**

In this lab, you will perform graphical and mathematical analysis on a tennis ball that is struck by a bat. The data required for this lab is the horizontal displacement of the ball from the location where it was hit to the point where it first strikes the ground and the time ...
*Tuesday, November 12, 2013 at 7:40pm by Amanda*

**Physics**

A 0.20-kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the string tension is 16 N. Find the tensions in the string when the ball is at twelve o'clock and at the six o'clock positions.
*Tuesday, October 6, 2009 at 4:47pm by Sanjna*

**Physics**

A cannon ball is fired at 50 m/s at a 37 degree angle above the horizontal. Calculate the time the cannon ball in the air, calculate how high it rises and calculate how far from the cannon the ball lands? Answers: 6.14 s, 46.2 m, 245.2 m
*Tuesday, November 13, 2012 at 10:00pm by Victoria*

**Physics**

A 0.20-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick tension is 16N. Find the tensions in the stick when the ball is at the twelve o'clock and at the six o'clock positions.
*Tuesday, October 9, 2012 at 10:22pm by Anonymous*

**Statistics**

A bowl contains 3 red balls, 2 blue balls and 5 white balls. A ball is selected and the color noted. Then it is replaced. A second ball is selected and its color noted. Find the probability of getting a red ball and a blue ball.
*Thursday, November 18, 2010 at 5:32am by Maryan*

**physics**

A basketball player makes a jump shot. The 0.650-kg ball is released at a height of 1.90 m above the floor with a speed of 8.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.90 m/s. What is the work done on the ball by air resistance, a ...
*Tuesday, October 30, 2007 at 8:14pm by Taylor*

**math**

a ball rebounds one half of the height from which it was dropped. The ball is dropped from a height of 160 feet and keeps bouncing. what is the total vertical distance the ball will travel from the moment it is droppedto the moment it hits the floor for the fifth time?
*Thursday, July 9, 2009 at 7:48pm by laly*

**physics**

A bowling ball weighing 71.2 is attached to the ceiling by a 3.90 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured at 4.20 .
*Tuesday, June 15, 2010 at 3:28pm by brad*

**Physics**

a ball is thrown vertically upward from the ground with the velocity of 30m/s. a) how long will it take to rise to its highest poitn? b) how high does the ball rise? c) how long after projection will the ball have a velocity of 10m/s? d) what is the total time of flight?
*Monday, July 19, 2010 at 7:22am by Patrick*

**AP PHYSICS**

A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.70 m/s. What is the work done on the ball by air resistance, a ...
*Saturday, November 13, 2010 at 9:42am by Indina*

**AP PHYSICS**

A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.70 m/s. What is the work done on the ball by air resistance, a ...
*Sunday, November 14, 2010 at 8:43am by Brennan*

**projectile motion**

A home run just clears a fence 105 m from home plate. The fence is 4.00 m higher than the height at which the batter struck the ball, and the ball left the bat at a 31.0° angle above the horizontal. At what speed did the ball leave the bat
*Sunday, November 14, 2010 at 11:49am by leila*

**AP Physics**

A basketball player makes a jump shot. The 0.700-kg ball is released at a height of 2.00 m above the floor with a speed of 7.70 m/s. The ball goes through the net 3.00 m above the floor at a speed of 3.10 m/s. What is the work done on the ball by air resistance, a ...
*Sunday, November 21, 2010 at 12:53am by Sierra*

**Physics**

A small m = 2.00 g plastic ball is suspended by a L = 24.0 cm long string in a uniform electric field, as shown in Figure P15.50. If the ball is in equilibrium when the string makes a 18.0° angle with the vertical as indicated, what is the net charge on the ball? The electric ...
*Tuesday, February 1, 2011 at 7:04pm by Rachel*

**algebra**

a ball is thrown downward from the too of 110 ft bldg with an initial velocity of 14ft per second. the height of ball h after t seconds is given by the equation h = -16t^2-14t +110. how long after ball is thrown will it hit the ground
*Thursday, December 15, 2011 at 3:02pm by kai*

**algebra**

a ball is thrown downward from the too of 110 ft bldg with an initial velocity of 14ft per second. the height of ball h after t seconds is given by the equation h = -16t^2-14t +110. how long after ball is thrown will it hit the ground
*Thursday, December 15, 2011 at 4:49pm by kai*

**physics**

A basketball player makes a jump shot. The 0.585 kg ball is released at a height of 2.14 m above the floor with a speed of 7.15 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.19 m/s. What is the work done on the ball by air resistance, a ...
*Sunday, February 19, 2012 at 1:57pm by Harry*

**physics**

A basketball player makes a jump shot. The 0.581 kg ball is released at a height of 2.02 m above the floor with a speed of 7.14 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.07 m/s. What is the work done on the ball by air resistance, a ...
*Thursday, October 18, 2012 at 1:59pm by Anonymous*

**physics**

A golfer launches a golf ball off a tee that has been raised 24.8 meters off the ground. If the golfer strikes the ball with a velocity of 26.5 m/s at an angle of 45.8 degrees, how far will the ball carry in the air before hitting the ground below?
*Sunday, November 4, 2012 at 9:41pm by emily*

**physics**

A boy standing on top of a building throws a small ball from a height of H1 = 43.0 m. The ball leaves with a speed of 14.9 m/s, at an angle of 55.0 degrees from the horizontal, and lands on a building with a height of H2 = 14.0 m. Calculate for how long the ball is in the air...
*Tuesday, January 21, 2014 at 8:45pm by John*

**physics!**

A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 40.0m/s. The bat does nonconservative W=70.0J on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0m above the point of impact...
*Tuesday, December 11, 2007 at 8:49pm by kabo*

**PHYSICS!!!HELP£¡£¡**

A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 40.0m/s. The bat does nonconservative W=70.0J on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0m above the point of impact...
*Tuesday, December 11, 2007 at 10:59pm by kabo*

**general physics**

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building with ...
*Monday, February 14, 2011 at 4:16pm by mark matat*

**physics**

playing shortshop, you pick up a ground ball and throw it to second base. the ball is thrown horizontally with a speed of 22 m/s ditectly toward point a. when the ball reaches the second baseman 0.45 s later, it is caught at ponit b. (a) how far were you from the second ...
*Tuesday, December 13, 2011 at 4:44pm by taylor*

**Algebra**

A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 28t + 7. How long does it take the ball to reach its maximum height? What is the ball’s maximum height? Round to the nearest hundredth...
*Monday, March 11, 2013 at 7:51pm by Cassie*

**Physics**

Imagine that you swing about your head a ball attached to the end of a string. The ball moves at a constant speed in a horizontal circle. Part A If the mass of the ball is 0.160kg and you supply a tension force of 14.5N to the string, what angle would the string make relative ...
*Tuesday, October 15, 2013 at 2:31pm by Lidia*

**physics**

A ball dropped from a sixth floor window accelerates at 10 m/s After 2 seconds it hits the ground. It bounces back with a velocity of -15 m/s. What is the ball’s velocity when it hits the ground? What is the change in velocity of the ball when it bounces? The ball is in ...
*Thursday, September 26, 2013 at 3:24pm by Anonymous*

**calculus**

A ball is thrown vertically upwards from a height of 6 ft with an initial velocity of 60 ft per second. How high will the ball go? Note that the acceleration of the ball is given by a(t)= 32 feet per second per second.
*Thursday, December 6, 2012 at 1:49pm by miranda*

**physics**

a 1.0 kg ball is thrown horizontally with a velocity 15 m/s against a wall. If the ball rebounds horizontally with a velocity of 13 m/s and the contact time is 0.020s what is the force exerted on the ball by the wall?
*Monday, February 4, 2008 at 1:08pm by melissa*

**Physics - Work**

A tennis racket is in contact with a 55 kg ball for 0.0050 s changes the ball's velocity from 30 m/s [E] to 40 m/s [W] over a distance of 0.0001 m. how much work is done on the tennis ball by the racket?
*Sunday, July 10, 2011 at 8:48pm by Allison*

**physics**

A football is kicked with an initial speed of 18 m/s at an angle of 36 degrees above the horizontal. (a) What is the maximum height that it reaches? (b) At what time does it land? (c) How far horizontally does it travel?
*Thursday, February 3, 2011 at 1:26pm by Ashley*

**physics**

A red ball is thrown down with an initial speed of 1.0 m/s from a height of 27.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 24.5 m/s, from a height of 0.7 meters above the ground. The force of ...
*Monday, August 27, 2012 at 8:38pm by David*

**Physics**

A child's toy consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. (Intro 1 figure) The spring has a spring constant k, the ball has a mass m, and the ramp rises a height y above the table, the surface...
*Friday, October 31, 2008 at 10:33pm by Sam*

**Physics **

Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 25 m/s. (a) What is the velocity of the ball 4 seconds after it is thrown? m/s (b) How much time...
*Wednesday, February 13, 2013 at 6:55pm by Jordan *

**Physics**

Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 35 m/s a) What is the velocity of the ball 4 seconds after it is thrown? m/s (b) How much time ...
*Saturday, September 7, 2013 at 6:46pm by Heather*

**phyics**

A simple pendulum is made from a 0.781-m-long string and a small ball attached to its free end. The ball is pulled to one side through a small angle and then released from rest. After the ball is released, how much time elapses before it attains its greatest speed?
*Tuesday, November 12, 2013 at 12:14pm by MATT*

**Physics**

A 5.80 kg ball is dropped from a height of 14.5 m above one end of a uniform bar that pivots at its center. The bar has mass 9.00 kg and is 6.40 m in length. At the other end of the bar sits another 5.30 kg ball, unattached to the bar. The dropped ball sticks to the bar after ...
*Thursday, April 5, 2012 at 10:35am by Joe*

**Soccer**

Yeeeeeha! The US tied Great Britian!!!! And that's the answer!
*Saturday, June 12, 2010 at 4:36pm by GuruBlue*

**mrs sue **

is the answer for the soccer golie question B?
*Sunday, February 20, 2011 at 7:55pm by hunter*

**poetry **

need help writing a narrative poem on soccer
*Wednesday, December 7, 2011 at 8:12pm by aka the fool*

**precalculus**

Berry is standing at the edge of a hill that slopes downward and to the right. He notices that for every 5 feet you go in a horizontal direction, the hill drops by 2 feet. Berry places a ball at the edge of the hill (the origin of the coordinate system), and kicks the ball at ...
*Monday, June 10, 2013 at 5:32pm by Anonymous*

**Physics**

A baseball with a mass of 150 g is thrown horizontally with a speed of 39.5 m/s (88 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 m/s (101 mi/h). Determine the average force exerted on the ball by the bat. ...
*Sunday, March 2, 2014 at 5:55pm by Elaine*

**physics**

I am not sure how to setup this problem. I posted it earlier and "BOB PURSELY" responded we are happy to critique your thinking. I have know idea how to solve this problem or even where to start. Please help!!! A tetherball leans against the smooth, frictionless post to which ...
*Monday, February 25, 2008 at 3:25pm by jose*

**Physics**

I am not sure how to setup this problem. I posted it earlier and "BOB PURSELY" responded we are happy to critique your thinking. I have know idea how to solve this problem or even where to start. Please help!!! A tetherball leans against the smooth, frictionless post to which ...
*Monday, February 25, 2008 at 5:06pm by Jose*

**Math**

during a match, pat kicks a football onto the roof of the stand. The stand and the path of the ball are at righ angles to each other. The path of the ball is given by y=2.5x-x^2÷15 The roof of the stand is given by y=x÷2+48 ÷5, where 18</=x</=40. All demensions are in ...
*Tuesday, November 13, 2012 at 6:27pm by Ellie *

**Ap physics**

A football is kicked at ground level with a speed of 10.0 m/s at an angle of 37.0° to the horizontal. How much later does it hit the ground?
*Friday, September 10, 2010 at 4:54pm by rayray*

**Ap physics**

A football is kicked at ground level with a speed of 10.0 m/s at an angle of 37.0° to the horizontal. How much later does it hit the ground?
*Friday, September 10, 2010 at 4:58pm by rayray*

**Physics **

A football is kicked at ground level with a speed of 20.7 m/s at an angle of 34.6° to the horizontal. How much later does it hit the ground?
*Sunday, February 5, 2012 at 12:51am by Stella *

**English**

I added a few more sentences. I hope you can help me express them correctly. Thank you. 1) Do you like soccer (Italian football)? Is soccer popular in America? 2) Can you watch the Italian football season in America? (Do you follow the Italian football season/championship/...
*Tuesday, March 29, 2011 at 5:52pm by Mike*

**science**

a ball is thrown straight upward and returns to the thrower's hand after 3.00s in the air. A second ball is thrown at an angle of 30.0 deg with the horizontal. At what speed must the second ball be thrown so that it reached the same height as the one thrown vertically?
*Tuesday, September 8, 2009 at 9:27pm by tani*

**AP PHYSICS PLEASE HELP**

A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.70 m/s. What is the work done on the ball by air resistance, a ...
*Monday, November 15, 2010 at 7:50pm by DUE TOMORROW NEED HELP!*

**physics**

A juggler throws a ball straight up into the air with a speed of 11 . With what speed would she need to throw a second ball half a second later, starting from the same position as the first, in order to hit the first ball at the top of its trajectory?
*Wednesday, September 28, 2011 at 5:03pm by Uzz*

**Math**

A baseball player hits a baseball into the outfield. The equation h= -0.005x^2 +x+3 give the path of the ball, where (h) is the height and (x) is the horizontal distance the ball travels. An outfielder catches 3 ft above the ground. How far has the ball traveled horizontally ...
*Thursday, October 20, 2011 at 9:43pm by Vanessa*

**Physics**

You are sitting at a baseball game when a foul ball comes in your direction. You prepare to catch it barehanded. In order to catch it safely, should you move your hands toward the ball, hold them still, or move them in the same direction as the moving ball? Explain.
*Wednesday, March 21, 2012 at 3:32pm by Becky*

**phsc**

When you are driving a golf ball,a good follow-through helps to increase the distance of the drive. A good follow-through means that the club head is kept incontact with the ball as long as possible.Why does this technique allow you to hit the ball farther ?
*Tuesday, June 26, 2012 at 1:44am by brandy*

**Physics**

A juggler throws a ball straight up into the air with a speed of 20. With what speed would she need to throw a second ball half a second later, starting from the same position as the first, in order to hit the first ball at the top of its trajectory?
*Wednesday, September 5, 2012 at 5:35pm by Matthew*

**pysics**

A home run just clears a fence 105m from home plate. The fence is 4.00m higher than the height at which the batter struck the ball, and the ball left the bat at a 31.0 degree angle above the horizontal. At what speed did the ball leave the bat?
*Tuesday, February 26, 2013 at 12:21am by Susan*

**physics**

A steel ball of mass 0.300 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 2.50 kg steel block initially at rest on a frictionless surface. The ...
*Monday, March 28, 2011 at 11:00am by Taylor*

**Physics**

A racket ball is struck in such a way that it leaves the racket with a speed of 5.6m/s in the horizontal diriction. when the ball hits the court it is a horizontal distance of 1.85 meters from the racket. FIND the height of the racket ball when it left the racket.
*Sunday, November 29, 2009 at 5:12pm by Alyssa*

**Physics**

Two students are on a balcony 24.3m above the street. One student throws a ball, B1, vertically downward at 12.5 m/s. At the same instant, the other student throws a ball, B2, vertically upward at the same speed. The second ball just misses the balcony on the way down. A.) ...
*Monday, February 14, 2011 at 6:01pm by Aidan*

**physics**

An entertainer juggles balls while doing other activities. In one act, she throws a ball vertically upward, and while it is in the air, she runs to and from a table 5.20m away at a constant speed of 2.40m/s, returning just in time to catch the falling ball. A) With what ...
*Friday, July 8, 2011 at 11:17pm by izzy*

**Physics**

A seasoned mini golfer is trying to make par on a tricky hole #5. The golfer can complete the hole by hitting the ball from the flat section it lays on, up a 45° ramp launching the ball into the hole which is d = 1.60 m away from the end of the ramp. If the opening of the ...
*Saturday, November 24, 2012 at 2:22pm by Mike*

**Physics**

A golfer imparts a speed of 32.9 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? s (b) What is the longest "hole in one" that the golfer ...
*Wednesday, April 2, 2008 at 9:44am by Hawkins*

**1 more phyiscs for today**

sorry for asking for help agen. a baseball catcher puts on an exhibition by catching a .150kg ball dropped from a helicopter at a height of 100m above the catcher. if the catcher "gives with the ball for a distance of .75m while catching it, what average force is exerted on ...
*Thursday, November 6, 2008 at 7:03pm by joyce*

**Physics**

A golfer imparts a speed of 32.1 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? (b) What is the longest "hole in one" that the golfer ...
*Monday, October 11, 2010 at 6:10pm by Kelly*

**physics**

A golfer imparts a speed of 32.1 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? (b) What is the longest "hole in one" that the golfer ...
*Monday, October 11, 2010 at 8:50pm by Alex*

**physics**

A golfer imparts a speed of 32.1 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a) How much time does the ball spend in the air? (b) What is the longest "hole in one" that the golfer ...
*Tuesday, October 12, 2010 at 7:04am by please help!*

**physics**

The tallest volcano in the solar system is the 17 km tall Martian volcano, Olympus Mons. An astronaut drops a ball oﬀ the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball’s 17 km fall at a value of 3.3 m/s 2 . (We ...
*Wednesday, September 12, 2012 at 1:32am by NEEDS HELP!*

**Physics**

A ball falls from the top of a building . through the air(air resistance is present) to the ground below. How does the KE just before hitting the ground compare to the PE at the top of the building? Isn't KE and PE equal to each other in this situation? Since I believe energey...
*Wednesday, October 17, 2007 at 5:38pm by Andrea*

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