A food packet is dropped from an aeroplane, moving with a speed of 360 kmph in a horizontal direction, from a height of 500 m. Find (i) its time of descent (ii) the horizontal distance between the point at which the food packet reaches the ground and the point above which it was dropped.
Velocity of aeroplane v = 360 kmph
v = 360 × (5/18) = 100 m/*; h = 500 m
i) Time of descent = t = √(2h/g) = √(2 x 500/10) = 10 sec
ii) Horizontal range R = u × √(2h/g) = 100 x 10 sec = 1000 sec
