Practice MCQs For Speed, Velocity & Acceleration

This quiz contains practice questions for Speed, Velocity & Acceleration (O Level). There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

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1. A racing car accelerates uniformly through three gear changes with the following average speeds:

$20 \, \text{m} \, \text{s}^{-1} $ for 2.0 s

$40 \, \text{m} \, \text{s}^{-1} $ for 2.0 s

$60 \, \text{m} \, \text{s}^{-1} $ for 6.0 s

What is its average speed?

$48 \, \text{m} \, \text{s}^{-1} $

$12 \, \text{m} \, \text{s}^{-1} $

$13 \, \text{m} \, \text{s}^{-1} $

$40 \, \text{m} \, \text{s}^{-1} $

2. If the displacement-time graph of a particle's movement is a straight line with gradient m (where m is positive), what can we conclude about its acceleration-time graph?

Zero

Straight line with negative gradient

Constant

Straight line with positive gradient

3. A car travels 9 km southwards, followed by 5 km eastwards. What is its southward displacement?

9 km

5 km

14 km

4 km

4. The average speed of a car is $35 \text{ km h}^{-1}$. How far can it travel in 45 minutes?

467 km

129 km

26.25 km

0.78 km

5. A ball is thrown vertically upwards. It lands on the top of a cliff after attaining a maximum height of 100 m in 7 s. What is the height of the cliff if the ball reaches the top of the cliff after 9 s? What is the height of the cliff? $ \left( g = 10 \, \text{m s}^{ - 2} \right)$

90 m

60 m

70 m

80 m

6. A car accelerates from $3 \, \text{m s}^{-1} $ to $9 \, \text{m s}^{-1} $ in 2 seconds. What is its average speed?

$12 \, \text{m s}^{-1} $

$3 \, \text{m s}^{-1} $

$6 \, \text{m s}^{-1} $

$9 \, \text{m s}^{-1} $

7. A car travels 9 km southwards, followed by 5 km eastwards. What is the magnitude of its distance and displacement?

Distance: 14 km Displacement: 4 km

Distance: 4 km Displacement: 14 km

Distance: 14 km Displacement: 10.3 km

Distance: 14 km Displacement: 14 km

8. Which of the following statements best describe this velocity-time graph?

The object travels at increasing velocity.

The object travels at constant velocity.

The object travels at constant acceleration.

The object travels with increasing acceleration.

9. A car accelerates from $12 \, \text{m s}^{-1} $ to $2 \, \text{m s}^{-1} $ over a period of 5 seconds. What is its acceleration?

$-2 \, \text{m s}^{-1} $

$-1 \, \text{m s}^{-1} $

$2 \, \text{m s}^{-1} $

$1 \, \text{m s}^{-1} $

10. A car travels 9 km southwards, followed by another 5 km southwards. What is the magnitude of its distance and displacement?

Distance: 4 km Displacement: 14 km

Distance: 14 km Displacement: 4 km

Distance: 14 km Displacement: 14 km

Distance: 4 km Displacement: 4 km

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