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1. The general case of an inelastic collision was analyzed in the theory section. In this...

1. The general case of an inelastic collision was analyzed in the theory section. In this question, you will be asked to analyze one specific collision. Show all work for full credit.

Assume that the center of the projectile tennis ball is 35 cm below the point of suspension and is released from an angle of 40 degrees with the vertical. Given that the mass of a tennis ball is 57 grams, which is also the mass of the target ball

a. What is its kinetic energy at the lowest point of its swing, just before it hits the target ball?

b. What is its velocity at this point?

c. If the projectile ball then collides and sticks to the target ball, what is their velocity after impact?

d. What is the kinetic energy of the two ball system just after impact?

e. How high will the combination rise after impact?

f. What angle will the combination make with the vertical at its highest point?

g. What is the % kinetic energy “lost” in the collision?

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Answer #1

The 50% of kinetic energy is lost in collision.

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