GCSE Physics Forces and Motion

Question 1

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Velocity has both magnitude and direction, so it is a vector.

Question 2

A car travels 150 m in 6 s. What is its average speed?

Accepted Answer

25 m/s

Answer

Speed = distance ÷ time = 150 ÷ 6 = 25 m/s.

Question 3

A resultant force of 20 N acts on a mass of 4 kg. What is the acceleration?

Accepted Answer

5 m/s²

Answer

F = ma, so a = F ÷ m = 20 ÷ 4 = 5 m/s².

Question 4

What does the gradient of a distance-time graph represent?

Accepted Answer

Speed

Answer

The gradient of a distance-time graph gives the speed.

Question 5

What is the weight of a 5 kg object on Earth? (gravitational field strength = 9.8 N/kg)

Accepted Answer

49 N

Answer

Weight = mass × gravitational field strength = 5 × 9.8 = 49 N.

GCSE - General Certificate of Secondary Education Practice Test