Question

If a body starts from rest to the motion, its

• A. $u=0$
• B. $a=0$
• C. velocity increases
• D. velocity decreases

Answer 1

Answer: (A), (C)

velocity increases

The explanation for correct options

A:

When a body starts to move from rest, its initial velocity, $u$ is zero.

Hence, $u=0$

C:

When a body starts to move from rest, its velocity increases when started moving.

The explanation for incorrect options

B:

When a body starts to move from rest, its velocity increases. As a result, the acceleration of the body can't possibly be zero.

D:

When a body starts to move from rest, its velocity does not decrease but rather increases.

Hence, options A and C are correct.