Junior Secondary · Science

Motion: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Motion.

10 questions24 marksFree, no account

Question 1

1 mark

If a toy car is stationary on a track, what is its speed?

Question 2

1 mark

An athlete is training on a straight road. If she maintains a constant speed of \( 5 \text{ m s}^{-1} \), how much time (in seconds) will it take for her to cover a distance of \( 400 \text{ metres} \)?

Question 3

1 mark

A bird flies \( 6 \text{ km} \) at a speed of \( 20 \text{ m s}^{-1} \). It then rests on a branch for \( 5 \text{ minutes} \) before flying another \( 6 \text{ km} \) in \( 15 \text{ minutes} \). What is the bird's average speed for the entire journey (including the rest time)?

Question 4

1 mark

On a distance-time graph, what does a horizontal straight line parallel to the time axis represent?

Question 5

1 mark

The motion of a robot is represented on a distance-time graph. The line starts at the origin \( (0, 0) \) and goes to the point \( (12, 60) \), where time is in \( \text{s} \) and distance is in \( \text{m} \). The graph then remains horizontal until \( t = 15 \text{ s} \). What is the average speed of the robot for the entire \( 15 \text{-second} \) journey?

Question 6

2 marks

An object is moving such that it covers \( 10 \text{ metres} \) in the first second and \( 15 \text{ metres} \) in the next second. State whether this represents uniform or non-uniform motion and explain your reasoning.

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Question 7

3 marks

A remote-controlled toy car travels a distance of \( 180 \text{ m} \) in exactly \( 2 \text{ minutes} \). Calculate the average speed of the car in \( \text{m s}^{-1} \).

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Question 8

5 marks

A swimmer pushes off a swimming pool wall to start a lap. Identify the action and reaction forces involved, stating which object exerts which force and how this results in the swimmer's forward motion.

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Question 9

4 marks

A cyclist travels a distance of \( 500 \text{ m} \) in a time of \( 25 \text{ s} \).

(a)<\/b> Calculate the average speed<\/b> of the cyclist in \( \text{m s}^{-1} \). (1 point)
(b)<\/b> If the cyclist continues at this same speed, how many seconds<\/b> will it take to travel a total distance of \( 2 \text{ km} \)? (2 points)
(c)<\/b> State the standard SI unit<\/b> of distance. (1 point)<\/p>

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Question 10

5 marks

A car trip is planned in two parts: a city drive and a highway drive.

Part 1 (City): The car covers a distance of \(6 \text{ km}\) in \(10 \text{ minutes}\).

Part 2 (Highway): The car travels at a constant speed of \(25 \text{ m/s}\) for \(5 \text{ minutes}\).

a) Calculate the average speed of the car during Part 1 in \(\text{m/s}\).

b) Calculate the distance covered in Part 2 in \(\text{km}\).

c) Determine the overall average speed for the entire trip, expressed in \(\text{m/s}\).

Write your answer out first, then check it against the worked solution.

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