Momentum and Impulse

Question 1

Define momentum:

Answer 1

Momentum is the product of the mass and velocity of an object.

Question 2

State Newton’s second law in terms of momentum:

Answer 2

Newton’s second law in terms of momentum:

The net force acting on an object is equal to the rate of change of momentum.

Question 3

State Newton’s third law:

Answer 3

Newtons third law:

When object A exerts a force on object B, object B simultaneously exerts an oppositely directed force of equal magnitude on object A.

Question 4

State the law of conservation of momentum:

Answer 4

Law of conservation of momentum:

The total linear momentum of an isolated system remains constant.

Question 5

Define an elastic collision:

Answer 5

An elastic collision is a collision in which both momentum and kinetic energy are conserved.

Question 6

Define an inelastic collision:

Answer 6

An inelastic collision is a collision in which only momentum is conserved.

Question 7

Define Impulse:

Answer 7

Impulse is the product of the net force and the contact time.