Assertion In vertical circular motion, speed of a body cannot remain constant.
Reason In moving upwards, work done by gravity is negative.

When is the work done by gravity negative ?

When work done by force of gravity is negative, then

When work done by force of gravity is negative, then

Assertion : In a uniform circular motion, the linear speed and angular speed of the body are constant. Reason : A body can move on a circular path without having acceleration.

When a body moves with a constant speed along a circle, What is the work done by it ?

Why is the work done against gravity considered negative?

Assertion In circular motion, acceleration of particle is not always towards centre. Reason If speed of particle is not constant, acceleration is not towards centre.