If a rocket with a mass of 7kg vertically accelerates at a rate of 32ms2, how much power will the rocket have to exert to maintain its acceleration at 6 seconds?

1 Answer
Jul 19, 2017

The power is =94.5W

Explanation:

We apply Newton's Second Law to find the force

F=ma

The mass is m=7kg

The acceleration is a=32ms2

The force is

F=ma=732=212N

We apply the equation of motion

v=u+at

to calculate the speed at t=6s

v=0+326=9ms1

The power is

P=Fv

P=2129=94.5W