Question

A rocket is fired from the ground it move upward with a constant acceleration 10 metre per second square for 30 sec after which the fuel is finished after what time from the instant of firing The Rock and will attend the maximum height

Answer 1

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QUESTION:- a rocket is fired from the ground it move upward with a constant
Acceleration 10metre per second square for 30sec after which the fuel is finished after what time from the instant of firing the rock and will attend the maximum height

ANSWER:-

s=ut+1/2(at²)
s=4500m
Putting in v²-u²=2as
We will get v=300m/s
a=-10m/s² after the fuel is consumed
So v=u-gt
We get t=30s
Total time for which rocket is ascending=30s+30s=60sec

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