- 1 (3 KiB) Viewed 41 times
A racquet ball with mass m = 0.242 kg is moving toward the wallat v = 14 m/s and at an angle of θ = 25° with respect to thehorizontal. The ball makes a perfectly elastic collision with thesolid, frictionless wall and rebounds at the same angle withrespect to the horizontal. The ball is in contact with the wall fort = 0.064 s.
1) What is the magnitude of the initialmomentum of the racquet ball?
kg-m/s
2) What is the magnitude of the change inmomentum of the racquet ball?
kg-m/s
3) What is the magnitude of the average forcethe wall exerts on the racquet ball?
N
- 2 (1.7 KiB) Viewed 41 times
4) Now the racquet ball is moving straighttoward the wall at a velocity of vi = 14 m/s. Theball makes an inelastic collision with the solid wall and leavesthe wall in the opposite direction at vf = -9.5m/s. The ball exerts the same average force on the ball asbefore.
What is the magnitude of the change in momentum of the racquetball?
kg-m/s
5) What is the time the ball is in contact withthe wall?
s
6) What is the change in kinetic energy of theracquet ball?
J
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