Chapter 1 - Momentum

Question 1

Define perfectly elastic collision?

Answer 1

A collision is perfectly elastic when kinetic energy is conserved (momentum and total energy always conserved).

Question 2

Define inelastic collision?

Answer 2

A collision is inelastic when kinetic energy is not conserved.

Question 3

Momentum = ?

Answer 3

Mass x velocity (vector)

Question 4

Define the Principle of Conservation of Momentum?

Answer 4

Within a closed system, the total momentum in any specified direction remains constant.

Therefore:

Total momentum before collision = total momentum after collision