Discussion Forum : Physics
Question -

A particle is moving along a circular pah with a constant speed 30 m/s. What is change in velocity of a particle ,when it describe an angle of `90^circ` at the centre of the circle

Options:
A .  zero
B .  `30sqrt(2)` m/s
C .  `60sqrt(2)` m/s
D .  `45sqrt(2)` m/s
Answer: Option B


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