# Physics ~IMPULSE~

posted by .

a) A tennis racket a 450 N force on a 0.05 kg tennis ball over a 0.006 s time period. What is the impulse applied to the ball?

b) A ball (0.5 kg) is thrown with a velocity of 15 m/s. A receiver catches the ball and brings it to rest is 0.02 s.
a) What is the change in momentum?

c) A ball (0.5 kg) is thrown with a velocity of 15 m/s. A receiver catches the ball and brings it to rest is 0.02 s.
a) What is the change in momentum of the ball?

b) What is the impulse delivered to the ball?

c) What force is exerted on the ball?

d) A ball (0.40 kg) is moving with a velocity of 18 m/s. A player strikes the ball and causes it to move in the opposite direction with a velocity of 22 m/s. The player exerts a force of 5500 N.

a) What is the change in momentum of the ball?

b) What is the impulse delivered to the ball?

c)How long is the foot in contact with a ball?

~formula's~
J= Ft
J= P
Ft=mvf-mvi

• Physics ~IMPULSE~ -

These are all the same so I am only going to do d

initial momentum = .4 * 18 = + 7.2 kg m/s

final momentum = - .4 * 22 = - 8.8 kg m/s

change in momentum = -8.8 - 7.2 = -16 kg m/s

impulse = change in momentum = -16 kg m/s

Force = change in momentum / change in time
so
-5500 = -16 /t
t = .003 seconds

## Similar Questions

1. ### momentum/impulse

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 …
2. ### 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 …
3. ### physics

A tennis ball has a velocity of 25 m/s and a mass of 57.5 g. After the ball hits a tennis racket, the velocity becomes twice that of the original speed and goes in the opposite direction. What is the force between the ball and the …
4. ### 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 impact?
5. ### physical science

a tennis player hits a ball of mass 200 g,which is moving towards him with a velocity of 30m/s west. calculate the impulse of the ball. b.the force the racket will exact on the ball if the time of contact is 0.2 seconds
6. ### Physics

Explain how a tennis racket can apply an impulse to the tennis ball.
7. ### 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 shall …
8. ### physics

A tennis player smashes a serve so that the racquet is in contact with the ball for 0.055 s, giving it an impulse of 2.5 N ⋅ s. What average force was applied during this time?
9. ### PHYSICS HELP!

When a tennis player hits .6kg tennis ball, the racket applies an average force of 250 N to the ball for a time about .15 seconds. Suppsoe that after the colliding, the 1 kg ball was measured to be moving to the left, but onl at 3.25 …
10. ### 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 m/s. …

More Similar Questions