Posted by **Kim** on Sunday, October 15, 2006 at 10:43am.

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 of the mass m and the velocity v of the body, expressions for

i) momentum

ii) the kinetic energy

c) use your answer to (b) to help calculate the mass and the velocity of the ball

d) when teh racket hits the ball it strikes it with a constant force of 60N in a direction opposite to its momentum, ringing to rest momentarily

calulate

i)the time the tennis ball takes to stop

ii) the distance the tennis ball travels while stopping

e) the force of 60N then contiues to act on the tennis ball for a further 0.60s. calculate

i) the momentum of the ball

ii)the distance the tennis ball travels while stopping

## Answer this Question

## Related Questions

- PHYSICS! PLEASE! - The following data concerns a tennis ball at a given instant ...
- physics - The following data concerns a tennis ball at a given instant before it...
- Physics ~IMPULSE~ - a) A tennis racket a 450 N force on a 0.05 kg tennis ball ...
- physics - A man is playing tennis and a tennis ball (m=1.2 kg) approaches his ...
- physics - A tennis ball is struck and departs from the racket horizontally with ...
- physics - A tennis ball is struck and departs from the racket horizontally with ...
- physics - A tennis ball is struck and departs from the racket horizontally with ...
- physics - As a tennis ball is struck, it departs from the racket horizontally ...
- Physics - A tennis ball is struck and departs from the racket horizontally with ...
- Physics - A tennis ball is struck and departs from the racket horizontally with ...

More Related Questions