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 car driver plans to take a total of two hours to make a journey of 75 km. The driver allocated a rest time of 45 mins in the middle of the journey.

At what average speed must the driver travel during the rest of the time if she wants to complete the journey in the two hours?

60 km/h

38 km/h

50 km/h

75 km/h

2. A ball is thrown vertically upwards at an initial speed of $23 \, \text{m s}^{-1} $. How long does it take for the ball to reach the ground again? $ \left( g = 10 \, \text{m s}^{-2} \right) $

4.6 seconds

3.2 seconds

6.4 seconds

2.3 seconds

3. A car travelling at 70 km/hr slows down to 50 km/hr in 30 minutes. What is its acceleration?

$40 \, \text{km}/\text{hr}^{2}$

$-40 \, \text{m}/\text{s}^{2}$

$-40 \, \text{km}/\text{hr}^{2}$

$-10 \, \text{km}/\text{hr}^{2}$

4. What must change when a body is accelerating?

the mass of the body

the speed of the body

the velocity of the body

the force acting on the body

5. A ball which is thrown vertically upwards at $1.2 \text{ m s}^{-1}$ decelerates uniformly at $10 \text{ m s}^{-2}$. How long will it take to reach zero velocity?

6.0 s

12.0 s

2.4 s

0.12 s

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

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

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

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

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

7. A car accelerates uniformly from $5 \text{ m s}^{-1}$ to $13 \text{ m s}^{-1}$ in 4.0 seconds. What is the acceleration of the car in $\text{m s}^{-2}$?

1.25

0.5

0.8

2.00

8. A train travelling at an average speed of 60 km/hr comes to a complete stop in 20 minutes' time. What is its deceleration?

$-180 \, \text{km}/\text{hr}^{2}$

$-3 \, \text{km}/\text{hr}^{2}$

$3 \, \text{km}/\text{hr}^{2}$

$180 \, \text{km}/\text{hr}^{2}$

9. Acceleration is:

$\frac{\text{change in velocity}}{\text{time taken}}$

$\frac{\text{velocity}}{\text{time}}$

$\frac{\text{change in speed}}{\text{time taken}}$

$\frac{\text{change in distance}}{\text{time taken}}$

10. A steel ball is released just below the surface of thick oil in a cylinder.

During the first few centimetres of travel, what is the acceleration of the ball?

constant but less than $10 \text{ ms}^{-2}$

increasing

constant and equal to $10 \text{ ms}^{-2}$

decreasing

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