A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively

Options

A. g, g
B. g − a, g − a
C. g − a, g
D. a, g

Answer

C

Explanation

Due to relative motion, acceleration of ball observed by observer in lift = (g = a) and for man on earth the acceleration remains g.