Centre of Mass 4 Question 1
2. A tennis ball is dropped on a horizontal smooth surface. It bounces back to its original position after hitting the surface. The force on the ball during the collision is proportional to the length of compression of the ball. Which one of the following sketches describes the variation of its kinetic energy
(2014 Adv.) (a)
(c)
(b)
(d)
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Answer:
Correct Answer: 2. (b)
Solution:
During collision, retarding force is just like the spring force
