Question

Which of the following is not a perfectly inelastic collision

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

Answer 1

Answer: (A)

Striking of two glass balls

Answer 2

For perfectly elastic collision relative velocity of separation should be zero i.e. the colliding body should move together with common velocity.