1.7 Linear Momentum And Impulse

Question 1

Momentum

Answer 1

The product of a bodies mass and velocity
P=mv

Question 2

The principle of conservation of linear momentum

Answer 2

For a system in which there are no external force, the total momentum before the collision = total momentum after the collision

Question 3

Elastic collision

Answer 3

Collisions in which kinetic energy is conserved, total energy is constant

Question 4

Inelastic collision

Answer 4

Collisions in which kinetic energy is not conserved, but total energy is constant

Question 5

Totally inelastic collision

Answer 5

Collisions in which the two objects stick together, with a large loss in kinetic energy, but total energy is constant

Question 6

Impulse

Answer 6

The product of force x time
I=ft

Question 7

Equation linking momentum and impulse

Answer 7

=chnage in

Fxt=mx#v

Question 8

Define Newton’s second law in terms of momentum

Answer 8

‘The rate of change of momentum of a body is proportional to the applied force and acts in the same direction as the force’