DPP5 Q5 MOTION IN STRAIGHT LINE A rocket is fired vertically from the
A rocket is fired vertically from the ground. It
moves upwards with a constant acceleration of
10 m/s2. After 30 seconds the fuel is finished.
After what time from the instant of firing the
rocket will it attain the maximum height? g = 10
m/s2:
(1) 60 s (2) 45 s
(3) 90 s (4) 65 s