A classical mechanics problem by Roche PeriyanayagamClassical Mechanics Level pending
A boy, who is standing on a pole of height 14.7 m throws a stone vertically upwards. It moves in a vertical line slightly away from the pole and falls on the ground. Its equation of motion in meters and seconds is x = 9.8 t − 4.9t2
Find the time taken for upward and downward motions.