Question

Q-7-If a particle is moving in uniform circular motion ,which statement is true
(I) Its speed is constant
(ii) its velocity is constant
(iii)Speed and velocity both constant
(IV)speed and velocity both are changing.​

Answer 1

Answer:

Uniform circular motion, motion of a particle moving at a constant speed on a circle. In the Figure, the velocity vector v of the particle is constant in magnitude, but it changes in direction by an amount Δv while the particle moves from position B to position C, and the radius R of the circle sweeps out the angle ΔΘ.