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A satellite of the earth is revolving in a circular orbit with a uniform speed v. If the gravitational force suddenly disappears, the satellite will

(a)      Continue to move with velocity v along the original orbit

(b)  Move with a velocity v, tangentially to the original orbit

(c)   Fall down with increasing velocity

(d)  Ultimately come to rest somewhere on the original orbit

Answer:  b

(4)

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