Solutions to the Quiz on Speed, Velocity, and Acceleration
Question 1: A quantity that is a measure of how the displacement traveled changes with time is
- speed
- velocity
- mass
- weight
Answer: velocity
Question 2: Which of the following quantities relating to motion is not a vector?
- Speed
- Velocity
- Mass
- Weight
Answer: Speed
Question 3: A car is traveling at 50m/s, the driver uses the brakes to stop the car in 10 seconds.
Find the average acceleration of the car.
Answer: − 5s
Explanation: At time = 0, speed Vt0 = 50m/s and when the car has stopped final speed Vf = 0.
Acceleration (a) = Vf − Vt0 / T = (0 − 50)/ 10 = − 5 m/s2
Question 4: Find the acceleration of a car traveling at constant speed.
- 0 m/s2
- 1 m/s2
- 2 m/s2
- Impossible to find.
Answer: 0 m/s2
Note that the car could still have acceleration when it is traveling in circular motion because its direction is constantly changing.
Question 5: A quantity that is a measure of how the velocity of a body changes with time is called
- Speed
- velocity
- acceleration
- none
Answer: acceleration
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Date of last modification: 2022