Physics — A-Level

Non-Uniform Motion — Multiple-Choice Questions (Cambridge International A-Level Physics): Exam Questions

Exam code:9702

15 questions · 15 marks · ≈ 15 min

Guided practice

11 markeasy

An egg is dropped from the top of a three-storey building. It falls through air until it reaches the ground

What remains constant throughout the fall?

Choose your answer

acceleration of the egg

weight of the egg

velocity of the egg

air resistance on the egg

21 markeasy

A box rests on a horizontal, rough surface. A string attached to the box passes over a smooth pulley and supports a mass at its other end.

cie-ial-images90png

When the box is released, what forces are acting on it?

Choose your answer

weight only

friction and weight

friction, weight and reaction

tension, friction, weight and reaction

31 markeasy

An object of weight mg falls through the air and experiences a drag force D.

Which of the following free-body diagrams shows the object when it has reached terminal velocity?

Choose your answer

The option artwork for this question (diagrams on the source site) was not captured by the authorized import — the demo never fabricates content. Refer to your past paper, or use Question help to work through it with the tutor. The answer key is attested, so you can still commit an answer below.

41 markeasy

A skydiver has a weight of 800 N, and experiences a drag force of 450 N.

What is the magnitude and direction of the resultant force of the skydiver?

	Magnitude / N	Direction
A	1250	Downwards
B	350	Upwards
C	1250	Upwards
D	350	Downwards

Choose your answer

51 markeasy

A lorry is driving along a horizontal road and experiences a resistive force opposing the forward motion.

Assuming that air resistance is negligible, what is the name of the resistive force?

Choose your answer

Upthrust

Weight

Friction

Normal contact force

61 markmedium

A car has a horizontal driving force of 2.0 kN acting on it and a resistive force a quarter of this size. It has a forward horizontal acceleration of 2.0 m s^–2

cie-ial-images92png

What is the mass of the car?

Choose your answer

500 kg

750 kg

1250 kg

2000 kg

71 markmedium

A stone of mass m is dropped from a tall building. There is significant air resistance. The acceleration of free fall is g.

When the stone reaches its terminal velocity, which row is correct?

	Magnitude of the acceleration of the stone	Magnitude of the force of gravity on the stone	Magnitude of the force of air resistance on the stone
A B C D	zero g g zero	mg mg zero zero	mg mg zero zero

Choose your answer

81 markmedium

A wooden block rests on a rough board. The end of the board is then raised until the block slides down the plane of the board at constant velocity v

cie-ial-images93png

Which row describes the forces acting on the block when sliding with constant velocity?

	Frictional force on block	Resultant force on block
A B C D	down the plane down the plane up the plane up the plane	zero down the plane zero down the plane

Choose your answer

91 markmedium

A block of mass 1.20 kg is on a rough horizontal surface. A force of 12 N is applied to the block and it accelerates at 4.0 m s⁻²

cie-ial-images94png

What is the magnitude of the frictional force acting on the block?

Choose your answer

2.4 N

3.6 N

7.2 N

16.8 N

101 markmedium

A boat travels forward in a straight line. The driving force of the boat is less than the water resistance acting on the boat.

Which statement is true?

Choose your answer

The boat is travelling at constant velocity

The resultant force acts in the same direction as the motion

The boat is decelerating

The resultant force is equal to the driving force of the boat

111 markhard

The three forces acting on a hot air balloon as it moves vertically are its weight, the force due to air resistance and upthrust.

The hot air balloon descends vertically at constant speed. The force of air resistance on the balloon is $F$ .

What weight of material must be released from the balloon so that it ascends vertically at the same constant speed?

Choose your answer

$\frac{1}{2}F$

$F$

$2F$

$4F$

121 markhard

A skydiver falls vertically from a stationary balloon.

She leaves the balloon at time $t=0$ . At time $t=T$ , she reaches terminal velocity. Beyond the time shown in the graphs, she opens her parachute

Which graph shows the variation with time $t$ of the force $F$ due to air resistance?

Choose your answer

131 markhard

Two skydivers, A and B, experience drag forces D₁ and D₂ respectively. Skydiver A has mass m and reaches terminal velocity v₁. Skydiver B has mass 2m and reaches terminal velocity v₂.

Given that $D\propto v^{2}$ , what is the value of $\frac{v_{1}}{v_{2}}$ ?

Choose your answer

$\frac{1}{2}$

$\frac{1}{4}$

$\frac{1}{\sqrt{2}}$

141 markhard

A car of mass $m$ * starts from rest and accelerates uniformly, reaching a velocity of $v$ *over distance $s$ . The car experiences a frictional force of $\frac{mg}{2}$ .

What is the driving force of the car?

Choose your answer

$\frac{m}{2} ( \frac{v^{2}}{s} + g )$

$m ( \frac{v^{2}}{s} + \frac{W}{2} )$

$\frac{m}{2} ( \frac{v^{2}}{s} - g )$

$m ( \frac{v^{2}}{s} - g )$

151 markhard

The diagram shows two blocks, A and B, that have masses of $3m$ and $2m$ respectively. A force $F$ is applied to Block A, and both blocks accelerate along a horizontal surface. Block B experiences a drag force of $\frac{F}{5}$ .

cie-mcq-3-2-q5-cie-ial-physics

What is the resultant force of Block A on Block B?

Choose your answer

$\frac{1}{5}F$

$\frac{4}{25}F$

$\frac{8}{25}F$

$\frac{2}{5}F$

Magnitude / N

Direction

1250

Downwards

350

Upwards

1250

Upwards

350

Downwards

Magnitude of the acceleration of the stone

Magnitude of the force of gravity on the stone

Magnitude of the force of air resistance on the stone

A

B

C

D

zero

g

g

zero

mg

mg

zero

zero

Frictional force on block

Resultant force on block

A

B

C

D

down the plane

down the plane

up the plane

up the plane

zero

down the plane

zero

down the plane