Question

Which of the following is not a perfectly inelastic collision?

• A. A man jumping onto a moving cart.
  
• B. An electron captured by a proton.
  
• C. A bullet striking a bag of sand.
  
• D. Striking of two glass balls.
  

Answer 1

The correct option is D Striking of two glass balls.

Hint: “Perfectly inelastic collision”

Solution:

In case of perfectly inelastic collision, the two bodies move together with same velocity. A bullet striking the bag of sand, capturing of electron by a proton and a man jumping into the moving cart are the examples of perfectly inelastic collision whereas striking of two glass balls is an example of elastic collision
Final Answer: (a)