A ball is thrown vertically upwards 3 points.
from the top of a tower with an initial velocity of 20 m/s. The ball reaches the ground after 6 s. Calculate (i)the height of the tower (ii)the velocity of the ball on reaching the ground, Take g=10m/s^2.
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When a ball is thrown vertically upward,it continues upward until it reaches a certain position ,and then it falls downward.At the lagrgest point it velocity is instanenously zero.
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