Chapter 2: (5) Momentum

Question 1

What is momentum?

Answer 1

The product of mass and velocity; p=m×v

Question 2

What is the SI unit for momentum?

Answer 2

kg m s-1

Question 3

The principle of conservation of momentum states that…

Answer 3

The total momentum of a system is constant if there are no external forces acting on the system.

Question 4

The principle of conservation of momentum in collision.

Answer 4

Total momentum before collision is equal to the total momentum after the collision.

Question 5

The principle of conservation of momentum in explosion.

Answer 5

The total momentum before and after the explosion is zero.

Question 6

What is the formula for elastic collision in principle of conservation of momentum?

Answer 6

m1u1 + m2u2 = m1v1 + m2u2
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Question 7

What is the formula for explosion in principle of conservation of momentum?

Answer 7

m1u1 + m2u2 = (m1 + m2)v

Question 8

What is the formula for inelastic collision in principle of conservation of momentum?

Answer 8

m1v1 = -m2v2