Chapter: Physics· JEE
A particle is moving along a circular path with a constant speed 30 m/s.
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