Question

A particle is moving along a circular path with a constant speed 30 m/s. What is change in velocity of a particle, when it describes an angle of 90° at the centre of the circle? 

A) zero 

B)30√2 m/s 

C) 60√2 m/s 

D) \(30\over \sqrt2\)  m/s

 

Answer 1

Correct Answer is option B) \(30\sqrt2\)