Question

a ball is projected from the ottom of the 15m high tower in the vertically upwards direction with a speed of 20m/s. at what time it will reach the top of the tower

Answer 1

Answer:

We know that when a ball is projected vertically upwards, at the highest point the velocity of the ball is equal to zero. If the velocity is zero, its acceleration becomes constant. So, at the highest point the acceleration at highest point is equal to 9.8 meters per second square.