A ball is thrown vertically upwards with a velocity of 20m/s from the top of the top of the building - Physics - Motion In A Straight Line

Question

A ball is thrown vertically upwards with a velocity of 20m/s from
the top of the top of the building of height 25m a)How high will
the ball rise ? b)what will be the velocity of the ball when it
strikes the ground c) After how long will the stone strike the
ground ?

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A ball is thrown vertically upwards with a velocity of 20m/s from the top of the top of the building of height 25m .a)How high will the ball rise ? b)what will be the velocity of the ball when it strikes the ground c) After how long will the stone strike the ground ?