Momentum

Question 1

State the equation for momentum

Answer 1

momentum = mass x velocity
p = m x v

Question 2

What are the units for momentum?

Answer 2

kg m/s

Question 3

Is momentum a scalar or vector quantity?

Answer 3

Vector quantity

Question 4

Is momentum negative or positive?

Answer 4

Momentum can be negative and positive. If an object is travelling to the right has positive momentum and an object is travelling to the left has negative momentum

Question 5

Define momentum

Answer 5

Momentum is a way of measuring how difficult it is to stop a moving object

Question 6

What is the conservation of momentum?

Answer 6

In the absence of external forces such as friction, the total momentum of a system remains the same. This means that in a collision, the sum of the momentums before the collision, and the sum of the momentums after the collision are the same

Question 7

State the equation including force, momentum and time

Answer 7

Force = change in momentum/time taken

Question 8

How can a force be reduced to do with momentum?

Answer 8

In any collision or impact, the force acting on a person (or object) can be reduced by increasing the amount of time it takes for its momentum to change.

Question 9

What is Newton’s Third Law?

Answer 9

When one object exerts a force on another object, that second object will exert an equal force on the first object in the opposite direction.