Question

Consider the following statements A and B and identify the correct answer given below:
(A) A body initially at rest is acted upon by a constant force. The rate of change of its kinetic energy varies linearly with time.
(B) When a body is at rest, it must be in equilibrium.

• A. A and B are correct
• B. A and B are wrong
• C. A is correct and B is wrong
• D. A is wrong and B is correct

Answer 1

The correct option is C A is correct and B is wrong

1) $\frac{\partial K.E}{\partial t}=mv.a=m{a}^{2}t$ which means 1 statement is correct.
2) When an acceleration acts in the opposite direction of velocity, a point would reach where velocity would be zero (body at rest), but the forces are not in equilibrium.