Number of results: 37,687

**Physics**

A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball traveling at 6.25 m/s ...

*November 14, 2013 by Leslie*

**physics**

A soccer ball with a mass of 415 g bounces off the crossbar of a goal and is deflected upward at an angle of 57° with respect to horizontal. Immediately after the deflection, the kinetic energy of the ball is 47 J. What are the vertical and horizontal components of the ball's...

*February 25, 2013 by josh*

**Phyics**

A rubber ball with a radius of 4.8 cm rolls along the horizontal surface of a table with a constant linear speed v. When the ball rolls off the edge of the table, it falls 0.83 m to the floor below. If the ball completes 0.68 revolutions during its fall, what was its linear ...

*October 19, 2008 by Andrew*

**Physics**

A 2 kg steel ball strikes a wall with a speed of 13.9 m/s at an angle of 54.5 ◦ with the normal to the wall. It bounces off with the same speed and angle, as shown. If the ball is in contact with the wall for 0.277 s, what is the magnitude of the average force exerted on...

*February 12, 2016 by Aly*

**physics**

A woman throws a ball at a vertical wall 40m away the ball is 20m above the ground when it leaves woman's hand with an initial velocity of 14m/s at 45degrees.when the ball hits the wall the horizontal component of its velocity remain unchanged.(a)where does the ball hit the ...

*October 8, 2009 by Tina*

**Physics**

A baseball is thrown from the roof of 23.5m -tall building with an initial velocity of magnitude 10.0m/s and directed at an angle of 53.1∘ above the horizontal. a.What is the speed of the ball just before it strikes the ground? Use energy methods and ignore air ...

*May 9, 2014 by Anonymous*

**Biomechanics**

A ball is thrown vertically upwards in the air at a velocity of 50(m/s) and reaches a maximum height of 20(m). Calculate the time when the ball reaches the 10(m) mark, while going up and coming down. Use the following equation of motion: y(f) = y(i) + v(i)t+1/2at^2 y(f) and y(...

*July 17, 2012 by Jack*

**Math**

Marsha hits a tennis ball upward from the top of a 90 foot high cliff with an initial velocity of 16 ft/s. Marsha hit the ball when it was 6 ft. above the top of the cliff. a. assume that the tennis ball will hit the ground below the cliff. Determine the equation for the ...

*November 10, 2013 by anonymous*

**physics**

A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 16.3 m/s at an angle of 43.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*January 31, 2012 by chelsea*

**physics**

A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 19.4 m/s at an angle of 45.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*February 18, 2012 by Shelby*

**Physics**

A golfer hits a shot to a green that is elevated 2.60 m above the point where the ball is struck. The ball leaves the club at a speed of 16.5 m/s at an angle of 30.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*September 15, 2012 by StressedStudent*

**physics**

A golfer hits a shot to a green that is elevated 2.90 m above the point where the ball is struck. The ball leaves the club at a speed of 17.5 m/s at an angle of 41.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*September 23, 2012 by kass*

**physics**

A golfer hits a shot to a green that is elevated 2.60 m above the point where the ball is struck. The ball leaves the club at a speed of 16.7 m/s at an angle of 33.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*June 23, 2013 by louis aaaa*

**physics**

A golfer hits a shot to a green that is elevated 3.10 m above the point where the ball is struck. The ball leaves the club at a speed of 19.4 m/s at an angle of 33.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*October 17, 2014 by Tami*

**physics**

A golfer hits a shot to a green that is elevated 3.30 m above the point where the ball is struck. The ball leaves the club at a speed of 17.3 m/s at an angle of 49.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*February 4, 2015 by V*

**Physics**

A golfer hits a shot to a green that is elevated 2.90 m above the point where the ball is struck. The ball leaves the club at a speed of 19.1 m/s at an angle of 30.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*August 2, 2015 by Cassie*

**physics**

A golfer hits a shot to a green that is elevated 2.70 m above the point where the ball is struck. The ball leaves the club at a speed of 19.0 m/s at an angle of 36.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*August 8, 2015 by anonymous*

**physics**

A golfer hits a shot to a green that is elevated 2.70 m above the point where the ball is struck. The ball leaves the club at a speed of 19.0 m/s at an angle of 36.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*August 8, 2015 by anonymous*

**Physics**

A golfer hits a shot to a green that is elevated 3.00 m above the point where the ball is struck. The ball leaves the club at a speed of 17.8 m/s at an angle of 53.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air ...

*September 16, 2016 by Dot*

**PHYSICS PLEASE HELP!!**

A tennis ball of mass= 0.058 kg and speed= 19 m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. What is the magnitude of the impulse given to the ball?

*November 20, 2011 by Mel*

**PHYSICS**

A baseball is thrown with an initial velocity of magnitude v at an angle of 21.8 with respect to the horizontal (x) direction. At the same time, a second ball is thrown with the same initial speed at a different angle A with respect to x. If the two balls land at the same spot...

*February 4, 2011 by Renee*

**Maths**

A circus artist drops a ball from a high wire. The ball takes 1.5 seconds to reach the ground. I) Find the height of the ball above the ground. II) How fast is the ball moving as it hits the ground? Write an expression for the speed of the ball t seconds after it's dropped ...

*November 17, 2016 by John B*

**physics**

A football is thrown upward at a(n) 23◦ angleto the horizontal. The acceleration of gravity is 9.8 m/s To throw a(n) 52 m pass, what must be the initial speed of the ball? Answer in units of m/s

*September 10, 2011 by Anonymous*

**physics**

A 0.13 kg ball of dough is thrown straight up into the air with an initial speed of 18 m/s. The acceleration of gravity is 9.81 m/s2 .What is its momentum halfway to its max- imum height on the way up?

*February 24, 2014 by chris*

**Physics**

A 2 kg steel ball strikes a wall with a speed of 8.15 m/s at an angle of 54.4◦ with the normal to the wall. It bounces off with the same speed and angle, as shown in the figure. If the ball is in contact with the wall for 0.243 s, what is the magnitude of the average ...

*November 2, 2011 by Seth*

**Physics Acceleration**

A baseball player hits a line drive. Just before the ball is struck, it is moving east at a speed of 38.8 m/s (87 mi/h). Just after contact with the bat, 1.05 10-3 s later, the ball is moving west at a speed of 46 m/s (103 mi/h). Find the ball's average acceleration.

*May 26, 2013 by Chris*

**Physics**

a ball is shot upwards from ground level at a vertical speed of 40 m/s. a. What is the vertical speed of the ball just as it hits the ground? Explain. b. How long is the ball in the air? Explain. c. Draw a height vs time graph of the situation. Include a point at each 1-second...

*October 2, 2016 by Amy*

**physics**

The football is kicked over the goalpost with an initial velocity of vA=32 m/s as shown. Determine the point B (x,y) where it strikes the bleachers. type this question to google to find the figure. please and thank you.

*April 4, 2011 by .*

**Physics**

You are standing on a 50m cliff and throw a ball upwards at 8.2m/s - calculate the maximum height the ball will reach - calculate the time it will take the ball to return where it started - calculate the speed of the ball when it hits the ground. Please help

*September 14, 2015 by Jay*

**Physics.**

A stationary 100-kg person is initially holding a 50-kg ball while standing on a skateboard. The person throws the ball to the right, and the ball moves (with respect to the ground) with a speed of 12 m/s. The person on the skateboard ____________. A. moves to the left with a ...

*February 27, 2014 by Jammie K.*

**Science**

When a football is kicked into the air, it has a velocity of 32m/s at an angle of 25º. At the very top of the ball’s path, what is it's vertical velocity?

*March 16, 2015 by Brenna*

**econ**

a new sports store was selling 50 soccer balls for $20 each. recently the store changed the price to $30 each and sold only 30 soccer balls per day.what is the approximate price elasticity of demand for soccer balls?

*December 4, 2013 by Jake*

**Physics**

A ball is thrown upwards with an initial velocity of 16 m/s. What is the velocity of the ball 1.5 s later? After the ball leaves the hand of the thrower, what is the value of acceleration acting on the ball as it is rising upwards? 9.8x1.5 = 14.7. 16-14.7=1.3 m/s after 1.5s. ...

*December 15, 2014 by Jim*

**physics**

A golf ball is thrown at an angle of 37 degree with horizontal with initial speed of 50 m/s. what is the maximum horizontal distance???

*August 24, 2012 by Hanan*

**physics**

A golf ball is thrown at an angle of 37 degree with horizontal with initial speed of 50 m/s. what is the maximum horizontal distance???

*August 24, 2012 by help urgent Hanan*

**math**

In slow- pitch softball the ball is pitched in an underhand motion. A batter in a softball game is pitched a ball that has initial vertical velocity of 35 feet per second. a. Write an equation for the height h (in feet) of the ball as a function of the time t (in seconds) ...

*March 21, 2013 by mo*

**Physics**

Standing on the top ledge of a 55 m high building you throw a ball straight up with an initial speed of 45 m/s. How long to the nearest second, does it take to hit the ground? I got 10 seconds for the first question. How do I go about answering this one? If the building in the...

*August 25, 2012 by Anonymous*

**Calculus**

A ball is thrown upward with an initial velocity of 96 feet per second from the top of a 100 foot building. (a) When well the ball attain its maximum height? (b) When will the ball hit the ground? Give a decimal answers correct to 2 decimal places.

*March 28, 2011 by Anonymous*

**Calculus**

A ball is thrown upward with an initial velocity of 96 feet per second from the top of a 100 foot building. (a) When will the ball attain its maximum height? (b) When will the ball hit the ground? Give a decimal answers correct to 2 decimal places.

*March 28, 2011 by Anonymous*

**calculus**

A ball is thrown upward with an initial velocity of 96 feet per second from the top of a 100 foot building. (a) When well the ball attain its maximum height? (b) When will the ball hit the ground? Give a decimal answers correct to 2 decimal places

*March 25, 2011 by Anonymous*

**Math**

A ball is thrown straight up from the top of a building 148 ft. tall with an initial velocity of 72 ft per second. The distance s(t) (in feet) of the ball from the ground is given by s(t) = 148 + 72t − 16t2. Find the maximum height attained by the ball.

*July 12, 2015 by Reagan*

**Physics**

A ball is thrown toward a cliff of height h with a speed of 27m/s and an angle of 60 degrees above horizontal. It lands on the edge of the cliff 3.0s later. What is the height of the cliff? What is the maximum height of the ball? What is the ball's impact speed? Please provide...

*September 28, 2012 by Nami*

**Physics**

Hypothetically, you are standing on the balcony of an apartment on the 10th level of a building and you throw a ball at some angle,è , above the horizontal away from the building. the ball lands on the ground 10m from the building, 3.2s after it was thrown. the height from ...

*April 26, 2012 by Rodney*

**Physics**

When a golf club strikes a golf ball, the club is in contact with the ball for about .0016 s. The 45-g ball acquires a speed of 71 m/s. a) What is the magnitude of the impulse applied to the ball? b) Estimate the magnitude of the average force exerted by the club on the ball ...

*April 4, 2011 by Aestas*

**English**

1. It is the World Cup soccer contest. 2. It is the World Cup soccer match. 3. It is the World Cup soccer game. =================================== Are they all grammatical? Which one is commonly used? Thank you for your help.

*August 26, 2015 by rfvv*

**physics**

Croquet ball A moving at 8.0m/s makes a head on collision with ball B of equal mass and initially at rest. Immediately after the collision ball B moves forward at 7.1m/s . What fraction of the initial kinetic energy is lost in the collision?

*March 14, 2014 by Ina*

**Precalculos**

A ball is thrown vertically upward with an initial velocity of 96 feet per second. The distance s (in feet) of the ball from the ground after t seconds is S(t)=96t-16t^2. At what time t will the ball strike the ground? For what time t is the ball more than 96 feet above the ...

*September 21, 2015 by Marcela*

**Physics**

While playing a game of billiards, your 0.50 kg cue ball, travelling at 1.9 m/s, glances off a stationary 0.30 kg billiard ball so that the billiard ball moves off at 1.3 m/s at an angle of 32º clockwise from the cue ball’s original path. What is the final speed of the cue ...

*June 23, 2013 by Jong*

**physical**

At what angle is an object launched if its initial vertical speed is 3.75 m/s and its initial horizontal speed is 4.50 m/s?

*July 6, 2011 by Annie*

**Physics**

At what angle is an object launched if its initial vertical speed is 3.75 m/s and its initial horizontal speed is 4.50 m/s?

*July 6, 2011 by Annie*

**physics**

A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0....

*December 18, 2012 by Noah*

**Physics**

A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0....

*December 19, 2012 by Noah*

**physics**

A 0.201-kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.105 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0....

*December 20, 2012 by Anonymous,*

**physics (clear answer)**

A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. The ball leaves the club at a speed of 16.0 m/s at an angle of 38.5° above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, ...

*January 27, 2014 by jason*

**Physics**

A 0.25-kg ball is attached to a 26-cm piece of string. The ball is first raised so that the string is taut and horizontal, then the ball is released so that, at the bottom of its swing, it undergoes an elastic head-on collision with a 0.21-kg ball that is free to roll along a ...

*April 28, 2009 by Lucy X*

**Physics**

An astronaut throws a ball with mass m to the right with speed v. It strikes the wall of the space station and rebounds, moving left with a speed V/2. What was the magnitude of the impulse of the ball caused by the collision?

*November 10, 2016 by Courtney*

**Physics**

A cannon ball is fired horizontally from a cannon that is 40.7m above the ground. The initial velocity of the cannon ball is 234m/s. How much time does the cannon ball spend in the air?

*January 29, 2017 by Mary*

**math**

in one elementary school class the following information on sports preferences was obtained: 7 liked tennis; 11 liked baseball; 9 liked soccer; 5 liked tennis and baseball; 3 liked baseball and soccer; 2 liked tennis and soccer; and 2 liked all three sports. How many students ...

*June 13, 2012 by rob*

**Algebra 2**

Okay I have : a ball is thrown with an initial velocity of 40 ft/second from a height of 4 feet. h(t)=-16t+40t+4 a) what is the highest point reached by the ball? b) at what time will the ball reach the highest point?

*February 4, 2009 by Bill*

**Nct**

A ball impinges directly on a similar ball at rest. The first ball is reduced to rest by the impact. Find the coefficient of restitution, if 1/5 of the initial kinetic energy is lost by impact

*June 25, 2016 by Nasser*

**Physics**

A ball of mass m makes a head-on elastic collison with a second ball (at rest) and rebounds in the opposite direction with a speed equal to 1/4 it's original speed. What is the mass of the second ball? I would really apprieciate it if ya'll would show steps. I have been ...

*November 9, 2012 by Henry*

**Physics**

Berry Bonds hits a baseball ball with an initial speed of 35m/s at an angle of 50 degrees with respect to the horizon. The playing field is surrounded by a 4.0m tall wall. Assume that when hit, the ball is initially very close to the ground. If the horizontal distance from the...

*October 26, 2010 by Gharib*

**8th grade science**

A 1 kg ball moving at 3 m/s strikes a 2 kg ball and stops. If the 2kg ball was initially at rest, find its top speed after the collision

*December 1, 2010 by tressie*

**Physics**

A ball, initially at y = 0, is thrown straight down and takes 1.50 s to move 15.5 m in the - y direction. Calculate the initial velocity of the ball. Calculate the velocity of the ball at t = 0.900s.

*September 25, 2011 by Fawad*

**physics**

A ball of radius 0.211 m rolls along a horizontal table top with a constant linear speed of 3.41 m/s. The ball rolls off the edge and falls a vertical distance of 2.27 m before hitting the floor. What is the angular displacement of the ball while the ball is in the air?

*March 16, 2012 by Katie*

**Physics**

a 2kg ball is moving rightward at 2m/s when it collides with a 6kg ball that was moving west at a speed of 4m/s. After collision the 2kg ball moves west at a speed of 4m/s. Thw 6kg ball is also moving westward after collision with a speed of 2m/s. Show momentum is conserved. ...

*February 17, 2012 by DK*

**physics**

A basketball player shoots the ball from a height of 2.22 m above the floor at a horizontal distance of 1 m from the basket which is 3.05 m above the floor. If she shoots the ball at an angle of 42° above the horizontal, what initial speed must she throw the basketball so ...

*November 16, 2014 by Melany*

**Physics**

HELP PLEASE. Hypothetically, you are standing on the balcony of an apartment on the 10th level of a building and you throw a ball at some angle, 0 , above the horizontal away from the building. the ball lands on the ground 10m from the building, 3.2s after it was thrown. the ...

*April 26, 2012 by Melissa*

**Math**

The scale drawing of a soccer field mis 1 inch= 10 yards. The drawing of a soccer field is 12 inches by 7.5 inches. Find the dimensions of the actual soccer field in square feet.

*August 13, 2016 by Michelle*

**Physics**

A golfer, standing on a fairway, hits a shot to a green that is elevated 5.50 m above the point where she is standing. The ball leaves her club at an angle of 37.0° above the ground, with a speed of 31.1 m/s. Find the time that the ball is in the air before it hits the green...

*February 1, 2015 by Tanner*

**Physics**

A golfer, standing on a fairway, hits a shot to a green that is elevated 5.50 m above the point where she is standing. The ball leaves her club at an angle of 37.0° above the ground, with a speed of 31.1 m/s. Find the time that the ball is in the air before it hits the green...

*February 2, 2015 by Paige*

**Intergated chemistry/physics**

A 10 pound bowling ball with a speed of 2.0 meters/second hits a 6 pound bowling ball. If the 10 pound bowling ball stops after the collision, what is the resulting speed of the 2nd ball in meters/second

*October 4, 2012 by Laura*

**Physics**

An outﬁelder throws a 1.05 kg baseball at a speed of 99 m/s and an initial angle of 47.5 ◦ . What is the kinetic energy of the ball at the highest point of its motion? Answer in units of J

*February 5, 2013 by Ted*

**Physics**

A player kicks a football from the ground at an angle of 42 degrees above the horizontal with an initial speed of 23m/s. a. How high will the ball rise? b. How long will it be in the air? c. What will be its range?

*November 1, 2013 by Tsunayoshi*

**PHYSICS**

A ball is shot upwards with an initial speed of 31 m/s. While it is in the air it experiences a constant downwards acceleration of 10 m/s2. Find its velocity 1, 2, 3, and 4 seconds after being released.

*February 4, 2015 by Courtney*

**Physics**

A 0.19 kg ball of dough is thrown straight up into the air with an initial speed of 13 m/s.The acceleration of gravity is 9.81 m/s. b) What is its momentum halfway to its maximum height on the way up? Answer in units of kg · m/s.

*April 7, 2016 by Anonymous*

**physics**

A 0.55-{kg} croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 220 N. If the ball's speed after being struck is 3.2 m/s, how long was the mallet in contact with the ball?

*February 15, 2011 by susan*

**physics**

A ball weighing 1.78 N is shot through a launcher, achieving a speed ( from rest) of 41 m/s in 0.28 s. A) What is the mass of the ball? B) What is the acceleration of the ball as it moves through the launcher? C) What average force acted on the ball to make it accelerate?

*November 19, 2011 by mack*

**Physics**

A glass ball, ball A, of mass 6.0 g moves at a velocity of 19.0 cm/s. It collides with a second ball, ball B, of mass 9.0 g, moving along the same line of velocity of 11.0 cm/s. After the collison, ball A is still moving, but with a velocity of 8.0 cm/s. a) What was ball A's ...

*November 7, 2007 by Jessica*

**physics**

A 3.00 kg ball is thrown vertically into the air with an initial velocity of 15.0 m/s. The maximum height of the ball is

*September 2, 2010 by Anonymous*

**Math**

A ball is thrown with an initial velocity of 10 m/s from a height of 2 meters. At what time does the ball hit the ground?

*June 17, 2011 by Ashley*

**physics**

a ball is thrown vertically upward with an initial velocity of 20 m/s? find the height attain by the ball?

*September 19, 2014 by shubhum*

**physics**

a ball of mass m , moving with uniform speed, collides elastically with another stationary ball.the incident ball will lose maximum kinetic energy when the mass of the stationary ball is?

*April 11, 2012 by srikala*

**PHYSICS**

A person on an apartment balcony holds a ball over the balcony and throws it directly upwards with an initial velocity of 30 m/s [up]. The ball was thrown from 15 m above the ground. How long will it take for the ball to hit the ground?

*February 19, 2013 by Tasha*

**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**

If a ball is launched straight upwards from the ground with an initial velocity of 20.0 m/s, how long does the ball take to reach a height of 15.0 m on the way up? For the same situation, at what time does the ball reach 15.0 m on the way back down?

*September 18, 2016 by Chad*

**physics**

a ball is rolled up q constant slope with an initial velocity of 2.2m/s after 2 seconds the ball is rolling down the slope with a velocity of 1.1 m/s what is the acceleration of the ball

*October 1, 2011 by Anonymous*

**physics**

a ball is rolled up q constant slope with an initial velocity of 2.2m/s after 2 seconds the ball is rolling down the slope with a velocity of 1.1 m/s what is the acceleration of the ball

*October 1, 2011 by Anonymous*

**physics**

no idea how to do this problem A kid at the junior high cafeteria wants to propel an empty milk carton along a lunch table by hitting it with a 3.0g spit ball. If he wants the speed of the 40g carton just after the spit ball hits it to be 0.30 m/s, at what speed should his 3.0...

*November 5, 2014 by Levin Need help for test!*

**math**

a punter kicked the football into the air with an upward velocity of 62 ft/s. Its height h in feet after t seconds is given by the function h= -16t ^2 + 62 t + 2. How long does it take for the ball to hit the ground?

*March 8, 2015 by Amy*

**math**

a punter kicked the football into the air with an upward velocity of 62 ft/s. Its height h in feet after t seconds is given by the function h= -16t ^2 + 62 t + 2. How long does it take for the ball to hit the ground?

*March 8, 2015 by Amy*

**math**

A golf ball of mass 4.6 g is struck by a golf club at a speed of 50 m/s. The ball has inital velocity ,v, in metres per second, of v(m) = 83/(m+0.046), where m is the mass, in grams, of the golf club. Describe the rate of change of the initial velocity as the mass of the club ...

*October 25, 2009 by Anonymous*

**physics**

A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward it is found that the incoming ball has bounced backward with a speed of 3.9 m/s.

*January 10, 2010 by Anonymous*

**physics**

A ball with a mass of .2 kg travelling at a speed of 26 m/s is struck by a bat. If the duration of the impulse is .001 seconds and the speed of the ball afterwards is the same as before, what is the average force (to the nearest Newton) of the impact?

*August 15, 2010 by Skyler*

**physics**

A car moving with an initial speed v collides with a second stationary car that is 46.0 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 37.7 percent of the original speed. Calculate the final speed of the second ...

*March 24, 2014 by Sami*

**physics**

Suppose I throw a ball straight up at an initial speed of 10 m/s. Suppose I'm 2 meters tall (about 6 feet) and the ball leaves my hand at 2 meters from the ground. How fast is it going at its highest point? How fast is it going on its way back down at 2 meters above the ground...

*September 21, 2010 by Sarah*

**physics**

2 identical cars capable of accelerating at 3.00m/s^2 are racing on a straight track with running starts. car A has an initial speed of 2.50m/s and car B has an initial speed of 5.00m/s. what is the seperation of the 2 cars after 10seconds? which car is moving faster after ...

*September 20, 2010 by Anonymous*

**please help with physics!!**

A 0.55-{kg} croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 220 N. If the ball's speed after being struck is 3.2 m/s, how long was the mallet in contact with the ball?

*February 15, 2011 by susan*

**physics**

A 6-kg bowling ball rolling at 5 m/s strikes a stationary 4-kg bowling ball. If Ball #1 is moving forward at 2 m/s after the collision, what is the speed and direction of Ball #2? What is the impulse of the system? If the collision last for .5 seconds, how much force is exerted?

*June 29, 2011 by ANN*

**Physics**

Please, help me answer this question. Two balls are moving in the same direction. Ball A has half the mass of ball B, and is moving at twice its speed. (a) Which ball has the greater momentum? (b) Which ball has greater kinetic energy? Thank you

*May 2, 2013 by Kathy*