GCSE Physics: Forces and Motion 2

Question 1

What is the unit of momentum in SI units?

Accepted Answer

kg·m/s

Answer

kg/m/s

Answer

N/m

Answer

J/s

Question 2

A 2 kg object travelling at 4 m/s collides and sticks to a stationary 2 kg object. What is their combined speed after the collision?

Accepted Answer

2 m/s

Answer

4 m/s

Answer

8 m/s

Answer

1 m/s

Question 3

What does the area under a velocity-time graph represent?

Accepted Answer

Distance travelled

Answer

Speed

Answer

Acceleration

Answer

Force

Question 4

Which force opposes the motion of a car moving through air?

Accepted Answer

Air resistance (drag)

Answer

Normal reaction

Answer

Weight

Answer

Friction from road

Question 5

At terminal velocity, what can be said about the forces on a falling object?

Accepted Answer

Weight and drag are equal.

Answer

Weight is greater than drag.

Answer

Drag is greater than weight.

Answer

There are no forces acting.

Question 6

A force of 20 N acts on an object for 5 seconds. What is the impulse delivered to the object?

Accepted Answer

100 N·s

Answer

4 N·s

Answer

25 N·s

Answer

15 N·s