# 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?

1. 👍 0
2. 👎 0
3. 👁 111
1. Force*distance=work

but force*time=mass*changevelocity
or force= 55*(70)/.0050 Notice the 70 as change of velocity, figure that out.

One remark: I would hate to hit a 55kg ball, geepers, that is bigger than some of my high school students.

Put that force into the first work equation.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

a tennis player swings her 1000g racket with a speed of 6.00 m/s. she hits a 60g tennis ball that was approaching her at a speed of 18.0 m/s . the ball rebounds at 43.0 m/s. a)how fast is her racket moving immediately after the

asked by Anonymous on November 29, 2010
2. ### physics

A man is playing tennis and a tennis ball (m=1.2 kg) approaches his tennis racket with a speed of 8.0 m/s. His racket is in contact with the ball for 2.0 ms and sends the ball flying in the opposite direction with a speed of 6.0

asked by jessica on June 10, 2014
3. ### physics

a 0.055kg tennis ball approaches a tennis racket at 25m/s, stays in contact with it for 0.010s, is reversed in direction leaves the racket at 40m/s. what is the avg force between the racket and ball?

asked by lindsy on June 12, 2013
4. ### physics

a 200g tennis ball approaches a racket at 20m/s is in contact with the racket for 0.008s and the ball rebounds at 4m/s. find the average force that the racket exerted on the ball

asked by sugin on April 16, 2012
5. ### physics

A 200g tennis ball approaches a racket at 20m/s, is in contact with the racket for 0.008s, and the ball rebounds at 4m/s. Find the average force that the racket exerted on the ball.

asked by sugin on March 31, 2012
6. ### physics

The mass of a regulation tennis ball is 62.0 (although it can vary slightly), and tests have shown that the ball is in contact with the tennis racket for 34.0 . (This number can also vary, depending on the racket and swing.) We

asked by Jodi on March 12, 2012
7. ### Physics

A tennis ball may leave the racket on a serve by a top player with a speed of 45.0 m/s. If the ball's mass is 0.063 kg, and it is in contact with the racket for 0.030 s, what is the average force (in newtons) on the ball?

asked by Zach on July 12, 2013
8. ### 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

asked by R on April 5, 2013
9. ### Physics

A tennis ball initially moves with a velocity of 27.0 m/s horizontally to the right. A tennis racket strikes the ball, giving it a velocity of 27.0 m/s to the left. Treat the collision as elastic and the ball and racket as

asked by Physics idiot on December 13, 2015
10. ### Physics

As a tennis ball is struck, it departs from the racket horizontally with a speed of 28.2 m/s. The ball hits the court at a horizontal distance of 19.5 m from the racket. How far above the court is the tennis ball when it leaves

asked by Dee on January 30, 2013

More Similar Questions