Assertion: A body at rest or a body in uniform motion is always in equilibrium
Reason: No net forces act on a body in equilibrium.

Options

A. IF both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If assertion is false but reason is true

Answer

D

Explanation

For a body in equilibrium net external force should be zero. If several forces `F_1, F_2 and F_3` are acting on the body , then `F_1+F_2+F_3….=0` According to Newton first law, a body will continue in its state of rest or uniform motion along a straight line unless compelled to change its change its state by external forces. The assertion does not specify that the body is moving along a straight line. It may be in uniform motion along a circle. Therefore, assertion is not true for all kinds of uniform motion