A rocket is moving such that the momentum of rocket is variable,and given as a function of time as
P=(2t^3-t^2+18t+20)kgm/s.
Find the force acting on the rocket at t=3 seconds.
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F=dp/dt
F= d(2t^3 -t^2 +18t+20) /dt
F= 6t^2-2t+18
here t= 3sec
F= 66N
F= d(2t^3 -t^2 +18t+20) /dt
F= 6t^2-2t+18
here t= 3sec
F= 66N
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