Sunday

May 1, 2016
Number of results: 65,688

**calculus**

If a ball is thrown vertically upward with a velocity of 160 ft/s, then its height after t seconds is s = 160t - 16t^2 What is the velocity of the ball when it is 96 ft above the ground on its way up?
*November 14, 2008 by fred*

**Physics**

8. A 0.5-kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of each force acting on the ball while it is traveling upward?
*March 7, 2011 by Nicola*

**Physics**

8. A 0.5-kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of each force acting on the ball while it is traveling upward?
*March 7, 2011 by Nicola*

**Physics**

A tennis ball is thrown vertically upward with an initial velocity of +7.0 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s^2. Answer in units of m/s
*September 21, 2011 by Vanessa*

**Physics**

The fastest major league pitcher throws a ball at 45m/s. If he throws the ball horizontally, how far does it drops vertically on the 18.4m trip to the home plate?
*September 25, 2011 by Mily*

**math**

A ball is thrown vertically upward with a velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. At what position above the ground will they meet?
*July 30, 2012 by paramesh*

**Dynamics**

A ball is thrown vertically upward with a velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. at what position above the ground will they meet?
*July 30, 2012 by DHilsath*

**physics**

A tennis ball is thrown vertically upward with an initial velocity of +7.5 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s.
*September 25, 2015 by Anonymous*

**Calculus**

If a ball is thrown vertically upward with a velocity of 96 ft/s, then its height after t seconds is s = -16t^2 + 96t. What is the velocity of the ball when it is 128 ft above the ground on its way up?
*October 13, 2015 by Callie*

**Physics !!**

1) A stone is dropped from the roof of a building; 2.00 s after that, a second stone is thrown straight down with an initial speed of 25 m/s and the two stones land at the same time. i) How long did it take the first stone to reach the ground? ii) How high is the building? iii...
*August 26, 2013 by Xiang !*

**Math Algebra**

Here the missing Infos ;-)). The Physics of Baseball by Robert Adair - after t seconds, starting 1 sec after 35 angle, rotating with an initial backspin of 2000 revolutions per minute, and hit about 110mph is given by H(t)= -80t^2+340t-260 (in feet) a)how many seconds ...
*February 3, 2013 by Kat*

**math**

a. The sales representative informs you that there is a total of 96 houses for sale. Of these 96, some have one floor plan while the others have a different floor plan. Use x to represent floor plan one and y to represent floor plan two. Write an equation that illustrates the ...
*March 29, 2011 by valerie*

**math**

a. The sales representative informs you that there is a total of 96 houses for sale. Of these 96, some have one floor plan while the others have a different floor plan. Use x to represent floor plan one and y to represent floor plan two. Write an equation that illustrates the ...
*March 29, 2011 by valerie*

**math**

If a ball is thrown vertically upward from the roof of 32 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t)=32+80t–16t2. What is the maximum height the ball reaches? What is the velocity of the ball when it hits the ground (height 0)? for max...
*August 20, 2010 by Jin*

**Physics**

A bullet of mass 15 g is fired with an initial speed of 287 m/s into a wooden block that is initially at rest. The bullet becomes lodged in the block, and the bullet and block then slide together on the floor for a distance of 1.4 m before coming to rest .If the coefficient of...
*October 21, 2015 by Wrenn*

**Physics**

Can someone please answer my question on this paragraph from my physics book regarding basic aerodynamics: "Now we consider a spinning baseball moving through the still air. As the ball spins, it tends to drag air around with it. If the streamlines are curved, there are ...
*October 20, 2009 by Sean*

**Physics**

A child is twirling a 0.0116 kg ball on a string in a horizontal circle whose radius is 0.102 m. The ball travels once around the circle in 0.560 s. (a) Determine the centripetal force acting on the ball. N (b) If the speed is doubled, does the centripetal force double? yes no...
*April 2, 2008 by Will G*

**Physics**

A child is twirling a 0.0116 kg ball on a string in a horizontal circle whose radius is 0.102 m. The ball travels once around the circle in 0.560 s. (a) Determine the centripetal force acting on the ball. N (b) If the speed is doubled, does the centripetal force double? yes no...
*April 3, 2008 by Tasha*

**physics**

A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical as shown. What is the ...
*May 22, 2012 by Adam*

**physics**

A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical as shown. What is the ...
*May 22, 2012 by Adam*

**physics**

spherical aluminum ball of mass 1.22 kg contains an empty spherical cavity that is concentric with the ball. The ball just barely floats in water.Calculate the radius of the cavity.
*October 5, 2010 by jenna*

**Physics**

A boy wants to throw a ball into his friend’s window 16.0 m above. Assuming it just reaches the window, he throws the ball at 55.0° to the ground. At what velocity should he throw the ball?
*November 23, 2014 by Joe*

**Physics**

A 1.10 kg} block of wood sits at the edge of a table, 0.790 m above the floor. A 1.10×10−2 kg} bullet moving horizontally with a speed of 725 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
*August 3, 2010 by Todd*

**physics**

A 1.20- block of wood sits at the edge of a table, 0.720 above the floor. A 1.20×10−2- bullet moving horizontally with a speed of 750 embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
*October 26, 2011 by chris*

**Physics**

A ball initially at rest is dropped from a window 18.6 m off the ground. How long does it take for the ball to reach the ground? Round your answer to 2 decimal places.
*November 21, 2010 by Patel*

**Physics**

A 200g ball is dropped from a height of 20m , on impact on a ground, it loses 30j of energy. Calculate the height of a ball as reaches on its rebound. (G=10m/s2
*January 10, 2016 by Mewon M Zwuogbae*

**physics**

A box has mass 13 kg and is at rest on a flat floor. A minimum force of 47 N is needed to push the box so it moves across the floor. What is the coefficient of static friction between the box and floor?
*November 20, 2014 by jlynn*

**physics**

true or false a small plastic ball has an excess negative charge on it. if a magnet is placed close to this ball, it will either attract or repel the ball, depending upon which pole is closer to the ball.
*March 9, 2012 by fatih*

**Physics Problems**

Will check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s) / (4m/s) =12 kg A 1-kg ...
*October 13, 2007 by Soly*

**Physics**

A 5.4 kg soccer ball moving to the right at 5.6 m/s collides with a 7.6 kg basketball moving to the left at 3.8 m/s. The soccer ball bounces left at 6.5 m/s after the collision. What is the speed of the basketball after the collision?
*December 20, 2012 by Sandra*

**physics**

I have been stuck on this for a while now and cant figure out what it is i am doing wrong HELP!!! A tennis ball with a velocity of 15.5 m/s is thrown perpendicularly at a wall. After strik- ing the wall, the ball rebounds in the opposite direction with a speed of 9.3 m/s. If ...
*August 20, 2012 by Alex*

**physics**

You throw a 0.15 kg ball straight upward from ground level with an initial speed of 15 m/s. (Yes, from ground level. This is to make the calculations easier. If it bothers you, imagine you are standing in a dugout.) Your friend throws a 0.09 kg lump of clay upward after it. ...
*February 28, 2016 by Shelby*

**Math**

) If you are standing near the edge of the top of a 200 ft. building and throw a ball vertically upward it will be modeled by the function 𝑠(𝑡) = −16𝑡2 + 64𝑡 + 200 where s(t) is the balls height above ground in feet and t is seconds after ...
*December 4, 2014 by Kevin*

**Calculus**

A ball is thrown from the origin of a coordinate system. The equation of its path is y = mx - e^2m/1000 . x^2, where m is positive and represents the slope of the path of the ball at the origin. For what value of m will the ball strike the horizontal axis at the greatest ...
*January 29, 2009 by Candy*

**physics**

A blue ball is thrown upward with an initial speed of 24.1 m/s, from a height of 0.6 meters above the ground. 2.9 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.5 m/s from a height of 31.8 meters above the ground. The force of ...
*August 30, 2014 by Anonymous*

**physics**

A 25 kg cannon ball is fired from a cannon with muzzle speed of 1520 m/s at an angle of 35.5 ◦ with the horizontal. The acceleration of gravity is 9.8 m/s 2 . Use conservation of mechanical energy to find the maximum height reached by first ball. Answer in units of m. I ...
*February 1, 2015 by keegan *

**physics**

a Baseball player throws a ball for the outfield horizontally such that it is released 1.5 meters above the ground. if the ball is to reach second base 20.0 meters away, how fast must the ball be thrown so that is does not bounce before reaching the base
*September 30, 2014 by Kat*

**Physics**

A ball of mass 0.3 kg, initially at rest, is projected from ground level toward a wall that is 27.0 m away. The ball's velocity the moment it is projected is 75.0 m/s at 60° relative to the horizontal, and the wall is 11.0 m high. During its flight, the ball impacts nothing ...
*March 7, 2013 by Jalen*

**Physics**

The main water line enters a house on the first floor. The line has a gauge pressure of 1.70 105 Pa. (a) A faucet on the second floor, 6.5 m above the first floor, is turned off. What is the gauge pressure at this faucet? (b) How high could a faucet be before no water would ...
*November 3, 2007 by john*

**physics**

A ball is rolling on a table and leaves the end side of the table with a velocity of 1.5 m/s. The table is 0.70 m high and the ball has a mass of 0.850 kg. What's the speed of the ball when it hits the ground? What equation should I use?
*October 12, 2014 by Richard*

**Physics**

A 5.6 kg ball (I=2/3mr^2) starts on a hill 11.3 m above level surface of the ground. The ball then rolls (without slipping) down the hill. What is the linear speed of the ball when it reaches the bottom of the hill?
*March 17, 2015 by Sarah*

**PHYSICS! PLEASE!**

The following data concerns a tennis ball at a given instant before it is struck by a tennis racket; horizontal momentum of tennis ball= 2.4Ns kinetic energy of ball= 45J a) why is correct to give the direction of the momentum but not the kinetic energy b) write down in terms ...
*October 15, 2006 by Kim*

**Math**

Hi, how would we solve a problem like this? The path of the ball for many golf shots can be modelled by a quadratic function. The path of a golf ball hit at an agle of about 10 degrees to the horizontal can be modelled by the function : h= -0.002d^2+0.4d where h is the height ...
*May 25, 2007 by Mark*

**physics**

trying to win the superbowl, a placekicker attempts a field goal from 45 m away. when kicked, the ball leaves the ground with a speed of 22m/s at an angle of 50 degrees above the horizontal. what can you say about the ball when it reaches the crossbar that is 3.0m above the ...
*February 22, 2011 by charlie*

**Physics**

A golf ball is given an initial speed of 20 m/s and returns to ground level. Which launch angle above level ground results in the ball traveling the greatest horizontal distance? Neglect friction. 1. 60 degrees 2. 45 3. 30 4. 15 The answer is 45 but I was wondering how to get ...
*June 15, 2011 by Julie*

**Physics**

The vertical position of a ball suspended by a rubber band is given by the equation y(t) = (3.4 m)sin(0.49 t/s − 0.40) − (0.4 m/s)t + 5.4 m. (a) What are the equations for velocity and acceleration for this ball? (Use the following as necessary: t.) (b) For what ...
*September 4, 2011 by emily*

**Physics**

A football is kicked off with an initial speed of 63 ft/s at a projection angle of 45 degrees. A receiver on the goal line 67 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in feet/second) if he is to catch...
*October 1, 2013 by 0tter*

**science**

When a basketball changes shape as it bounces off the floor is it because of balanced force acting on it?
*April 4, 2014 by steve*

**Physics**

A 1200-N crate is being pushed across a level floor at a constant speed by a force of 260 N at an angle of 20.0° below the horizontal. (a) What is the coefficient of kinetic friction between the crate and the floor? (b) If the 260 N force is instead pulling the block at an ...
*September 18, 2011 by Elaine Jetton*

**technology**

Need help on the question below. I have read all about all 3 laws but still don't understand if this would be 1st or 2nd law. "A ball is rolling in a straight line on a hardwood floor. A cat hits it from the right, so the ball rolls left. Which Law of Motion is this? a. Netwon...
*March 14, 2014 by Brandi*

**Physics**

To move a crate across a rough floor, you pull on it at an angle of 21 degrees above the horizontal. How much force is needed if the mass of the crate is 32kg and the coefficient of static friction between the crate and floor is 0.57
*March 6, 2012 by Corey*

**Physics**

A 800 N crate is being pulled across a level floor by a force F of 320 N at an angle of 29° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate.
*October 2, 2011 by Bridge*

**Physics**

A 1060 N crate is being pulled across a level floor by a force F of 300 N at an angle of 35° above the horizontal. The coefficient of kinetic friction between the crate and the floor is 0.25. Find the magnitude of the acceleration of the crate in m/s^2
*January 13, 2013 by Alyssa Thompson*

**Algebra everyone!!!**

A 0.5 kg ball is thrown vertically upward at a speed of 25 m/s. Its velocity, v(t) (in m/s), at time, t (in seconds), is given by v(t)= 25-9.8t Its kinetic energy, K(v) (in Joules), is given by K(v)=0.5v^2. Express the ball's kinetic energy as a function of time, K(t). Thanks ...
*February 11, 2007 by Shay*

**physics**

Tom the cat is chasing Jerry the mouse across the surface of a table 1,5m above the floor. jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 5m/s. Where will tom strike the floor? Tom the cat is chasing Jerry the mouse across...
*September 30, 2008 by mb*

**physics**

Tom the cat is chasing Jerry the mouse across the surface of a table 1,5m above the floor. jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 5m/s. Where will tom strike the floor? Tom the cat is chasing Jerry the mouse ...
*September 30, 2008 by mb*

**BTech, Mechanical**

A ball is thrown vertically upward with velocities of 18 m/s. Two seconds later another ball is thrown upwards with a velocity of 13.5 m/s. At what position above the ground will they meet?
*July 22, 2013 by Seetharaman*

**Physics**

A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate the following: a.) how high it goes. b.) how long the ball is in the air before it comes back to his hand. c.) at what time(s) will the ball pass a point 8.00 m. If you got multiples ...
*September 26, 2011 by Jane*

**Physics**

A person throws a ball upward into the air with an initial velocity of 15.0 m/s. Calculate the following: a.) how high it goes. b.) how long the ball is in the air before it comes back to his hand. c.) at what time(s) will the ball pass a point 8.00 m. If you got multiples ...
*September 27, 2011 by Phil*

**Math**

A boy throws a ball with a horizontal speed of 2.5 m/s at a height of 0.8 m above the ground. The Coefficient Of Restitution between ball and ground is 80%. • Calculate the x− and y−components of the ball’s velocity, immediately after its first bounce. Correct ...
*July 12, 2015 by David*

**Physics**

A soccer player kicks the ball toward a goal that is 28.0 m in front of him. The ball leaves his foot at a speed of 19.5 m/s and an angle of 30.6° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The answer is not 19.5 m/s.) ...
*December 1, 2015 by Anonymous*

**Physics**

4. A ball is kicked toward a fence from a point 32 meters away. The velocity of the ball as it leaves the kicker’s foot is 24 m/s at an angle of 37 degrees above the horizontal. The top of the fence is 2.0 meters high. Assuming air resistance to be negligible…(1 point) a. What...
*September 25, 2014 by John*

**calculus**

A ball is thrown 12 meters in the air (so that the initial up-and-down distance is 24 meters). The ball rebounds 95% of the distance it falls. What is the total vertical distance traveled by the ball before it stops bouncing?
*November 12, 2014 by Anonymous*

**PHYSICS**

1....How much force needed to bring a 3200 lb car from rest to a velocity of 44 m/s in 8 sec.? 2....A ball with a mass of 2 kg move to the right with a speed of 2 m/s. It hits a ball of mass 0.50 kg which is at rest. After collision the second ball moves to the right with a ...
*February 18, 2011 by EM*

**Science**

Two balls of mass 10kgs and 100kgs are thrown vertically up at the same speed which ball will pass the point of projection in their downward direction with greater speed?
*July 6, 2015 by Adithya*

**Physics Check**

A ball is rolling across the top of a billiard table and slowly rolls to a stop. How would Galileo explain the motion of the ball as it stopped? a)The ball's natural state is at rest =b)The ball stopped because it ceased to be pushed c)The ball stopped due to external forces ...
*July 12, 2010 by Ariel*

**Physics**

Nicole throws a ball straight up. Chad watches the ball from a window 5.0m above the point where Nicole released it. The ball passes Chad on the way up, and it has a speed of 10m/s as it passes him on the way back down. How fast did Nicole throw the ball?
*September 17, 2013 by Kasey*

**Physics**

At a height of 3.00 m above the ground, a 0.500-kg ball is thrown with an initial speed of 30.0 m/s in an arc from point A to point C. When the ball is 6.00 m above the ground travelling upward, what is the speed of the ball?
*March 26, 2008 by Marty*

**physics**

A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?
*September 30, 2012 by Rebecca*

**Physics**

A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?
*October 1, 2012 by Katie*

**physics**

a .20 kg ball on a string is whirled on vertical circle at constant speed. When the ball is at 3:00 position, tension is 16 N. a) is centripetal force acting on ball the same at each point on the circle? b) when the ball is at 3:00, what is proving the centripetal force: ...
*February 12, 2012 by Sejul*

**physics**

When a pencil cell is released from a certain point on a inclined board,it travels a distance of 35cm on floor A before it comes to rest.when the same pencil cell is released from the same point on the same inclined board,it travels a distance of 20 cm on floor B before coming...
*July 27, 2014 by reem*

**phy 231**

Tall buildings are flexible and undergo simple harmonic motion (SMH) when excited by wind. Suppose the top floor of a skyscraper is in SMH, swaying back and forth with a frequency of 0.181 Hz and an amplitude of 1.5 m. a.What is the maximum speed experienced by top floor ...
*March 8, 2016 by Andrea*

**Physics**

A ball is thrown straight downward with a speed of 0.50 m/s from a height of 4.0 meters. What is the speed of the ball 0.70 seconds after it is released? GIVEN: Vi = 0.50 m/s Vf = ? d = 4 m t = 0.70 s
*February 2, 2010 by Priscilla*

**Physics**

If a ball is thrown at an initial speed of 8.0m/s at an angle of 35 degrees above the ground, what is the speed of the ball when it returns to its original height?
*September 13, 2015 by Jacob*

**physics**

In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball moves at 3.50 m/s along a line making an angle of 22 degrees with its original direction of motion. and the second ball had a speed of 2 m/s. a)What is ...
*March 4, 2007 by Chris*

**physics**

How many secons apart should two balls be released so that a ball being deopped from a height of H reaches the ground at the same time as a ball dropped from a height of 5H?
*October 22, 2008 by prve*

**math**

The velocity(in feet per second) of a bouncing ball was recorded every second. The table shows the velocity for each second. Time(sec):|1|2|3|4|5| Velocity(ft/sec)|-15|-6|2|10|-11| What is the average velocity of the bouncing ball over 5 seconds? What is the highest record ...
*October 28, 2013 by Kai-Cin*

**Physics**

Nicole throws a ball straight up.Chad watches the ball from a window 5meters above the point where Nicole released it . The ball passes Chad on the on the way up, and it has a speed of 10m/s as it passes him on the way back down.Determine how fast Nicole threw the ball upwards
*April 4, 2013 by Caroline*

**physics**

a golfer hits a golf ball which is 30m high infront of a 20m high tree. the ball just passes over the top of the tree. what was the vertical component of the initial velocity of the ball?
*April 10, 2013 by amy*

**Physics**

Bob jumps from a 2.0 m high table and wants to jump over a 0.85 m radius ball. How fast must Bob move horizontally to not land on the ball? If we use kinematics equations for projectile, the answer is 2.66 m/s; however, with this velocity the person will land on the ball. I ...
*September 19, 2012 by Elaine*

**Physics projectile motion**

A football player kicks a ball with a soeed of 22.4 m/s at an angle of 49 degrees above the horizontal from a distance of 39.0 m from the goal post, A). By how much does the ball clear or fall short of clearing the crossbar of the goalpost if the that bar is 3.05 m high? B). ...
*December 20, 2015 by Khalid*

**Physics**

a projectile is launched in the horizontal direction. It travels 2.050 m horizontally while it falls 0.450 m vertically, and it then strikes the floor. What was the original velocity of the projectile? How long was it in the air?
*February 7, 2013 by Anonymous*

**physic**

.Question part Points Submissions 1 ¨C/1 0/2 Total ¨C/1 ...A volleyball is spiked so that it has an initial velocity of 18 m/s directed downward at an angle of 50¡ã below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields ...
*October 24, 2010 by kya*

**Physics**

A tennis player strikes a ball when it is 2.20m above the ground, with a velocity 18.7 m/s at 20 degrees above the horizontal. The net is 5m away horizontally and it is 0.90m high. after 0.37 seconds, what is the direction of the ball with respect to the horizontal?
*January 28, 2016 by S*

**Calculus (Vector-Valued Functions)**

"a ball is thrown horizontally from the top of a cliff 256 ft high with an intial speed of 50 ft/sec. find the time of flight of the ball and the distance from thr base of the cliff to the point where the ball lands"
*January 27, 2012 by TheThinker*

**PHYSICS**

Max is throwing a 57g tennis ball upward and hitting it (with a racket) when it reaches the top of its flight. If the racket exerts an average force of 440N on the ball, find the speed of the ball after the collision (if they are in contact for 4.5ms)
*April 5, 2013 by R*

**Physics based Calculus**

Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that the fastest he can ...
*September 27, 2012 by Brianna*

**physics**

A ball of mass 1.04 kg at the end of a 0.52 m long string is swung in a vertical circle at the fastest constant speed the ball can have without the string breaking. If the string can only exert 33 N of force without breaking, a) What is the speed of the ball?
*January 20, 2012 by Anonymous*

**Physics**

Please help me!! I need this as soon as possible. 2.A billiard ball at rest is struck by the cue ball of the same mass whose speed is 5 m/s .After an elastic collision the cue ball goes off at 50 degree with respect to its original direction of motion and the struck ball goes ...
*February 18, 2016 by Anonymous*

**Physics**

Consider a car is heading down a 5.5° slope (one that makes an angle of 5.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the coefficient of static friction is involved—that...
*February 21, 2014 by Maura *

**Calc2**

A) A ball is dropped from "M" meters above a flat surface. Each time the ball hits the surface after falling a distance, h, it rebounds a distance d, where 0<r<1. Find the formula that represents the total distance the ball travels up and down. B) Use the formula in part...
*April 16, 2015 by Jackee*

**physics**

A ball rolls along flat ground at 7.0 m/s then encounters a hill. If the ball rolls 15 m up the hill before coming to a stop, what was the acceleration (in m/s2) experienced by the ball as it rolled up the hill?
*September 12, 2013 by dominique*

**Physics **

A ball on the end of a string is whirled around in a horizontal circle of radius 0.486 m. The plane of the circle is 1.83 m above the ground. The string breaks and the ball lands 2.39 m away from the point on the ground directly beneath the ball’s location when the string ...
*January 28, 2013 by Emily*

**Physics **

A ball on the end of a string is whirled around in a horizontal circle of radius 0.486 m. The plane of the circle is 1.83 m above the ground. The string breaks and the ball lands 2.39 m away from the point on the ground directly beneath the ball’s location when the string ...
*January 28, 2013 by Allisa *

**Physics**

A tennis ball is thrown vertically upward with an initial velocity of +7.0 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s^2. Answer in units of m/s AND How long will the ball take to reach its starting point...
*September 21, 2011 by Vanessa*

**physics**

A tennis ball is thrown vertically upward with an initial velocity of +7.5 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s How long will the ball take to reach its starting point? ...
*January 29, 2012 by shay*

**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 ...
*November 12, 2013 by Amanda*

**physics**

In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball moves at 3.50 m/s along a line making an angle of 22 degrees with its original direction of motion. and the second ball had a speed of 2 m/s. a)What is ...
*March 3, 2007 by Chris*

**math/Right triangle trig**

Your favorite team is attempting a field goal. The ball is kicked at an angle of 45 degrees with the field. The ball covers a horizontal distance of 85 inches before the kick is blocked. What is the minimum height the opposing team's player can be to block the kick?
*November 22, 2011 by Anonymous*