Question

Suppose a body that is acted on by only two forces, is accelerated. For this situation, mark the correct statement :
( Initial Velocity is non zero and in same direction as acceleration )

• A. The body cannot move with constant speed
• B. The velocity can never be zero
• C. The sum of two forces cannot be zero
• D. The two forces must act in the same line

Answer 1

Answer: (A), (B), (C)

The correct options are
A The body cannot move with constant speed
B The velocity can never be zero
C The sum of two forces cannot be zero

If the body is accelerating, then there is a net force that drives the body. Hence, the sum of the two forces cannot be zero.

Since the body is accelerating, velocity cannot be zero and the body can't move at a constant speed.

It is not necessary that the two forces must act in the same line however they may act in the same line.

Hence, options A, B, and C are correct.