Question 1

If a car travels at a constant speed in a circular path, what can be said about its velocity?

Accepted Answer

Its velocity is continuously changing.

Answer

Its acceleration is zero.

Answer

Its velocity is constant.

Answer

Its speed is changing.

Question 2

Which of the following statements is true about an object moving in a straight line with a constant speed?

Accepted Answer

Its velocity is constant.

Answer

Its acceleration is non-zero.

Answer

Its velocity is changing.

Answer

Its speed is unequal to its velocity.

Question 3

A train accelerates uniformly from rest to 30 m/s in 10 seconds. What is its acceleration?

Accepted Answer

3 m/s²

Answer

10 m/s²

Answer

30 m/s²

Answer

0.3 m/s²

Question 4

What is the primary difference between speed and velocity?

Accepted Answer

Velocity includes direction, while speed does not.

Answer

Speed is always greater than velocity.

Answer

Speed involves distance, while velocity involves displacement.

Answer

Velocity is a scalar, and speed is a vector.

Question 5

A car decreases its speed from 60 m/s to 30 m/s over a period of 5 seconds. What is its acceleration?

Accepted Answer

-6 m/s²

Answer

-12 m/s²

Answer

6 m/s²

Answer

30 m/s²

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