Question

☢️ A man sitting in a lift moving upwards with a uniform acceleration f, throws a ball vertically upwards with v as velocity relative to the lift and catches it back after t seconds. Prove that f+g=2v.☢️​

Answer 1

Answer:

acceleration of the lift is given a.

acceleration of the lift is given a.taking every thing with respect to lift.

acceleration of the lift is given a.taking every thing with respect to lift.speed of the ball relative to lift is =V, similarly acceleration of the ball with respect to lift is −g+−a=−(g+a)(acceleration of lift) [taking upwards direction as positive].

acceleration of the lift is given a.taking every thing with respect to lift.speed of the ball relative to lift is =V, similarly acceleration of the ball with respect to lift is −g+−a=−(g+a)(acceleration of lift) [taking upwards direction as positive].so time of flight of body moving vertical is given by g+a2V.

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