Question

Name a physical quantity that (i) varies (ii) remains same, in a uniform circular motion.

Answer 1

When an objects moves in a circular path:

 ⇒It has uniform speed 
⇒Velocity changes

Reason:

Uniform speed :
             " If an object covers equal distance in equal interval of times, we say that it is travelling with uniform speed "

⇒As direction of motion changes for every point in a circle , velocity of object also changes.

⇒As velocity is changing, we can the motion of the object is accelerated.

Answer 2

I) velocity

II) speed