If a force moves an object of mass m so that its velocity is given by v(t) = 4t-

Question

If a force moves an object of mass m so that its velocity is given by v(t) = 4t-2, what is the power exerted by that force? The answer is 4m (4t-2) please show the solution,thanks If a force moves an object of mass m so that its velocity is given by v(t) = 4t-2, what is the power exerted by that force? The answer is 4m (4t-2) please show the solution,thanks If a force moves an object of mass m so that its velocity is given by v(t) = 4t-2, what is the power exerted by that force? The answer is 4m (4t-2) please show the solution,thanks

Explanation / Answer

POWER of a system when force F is applied and its velocity V is given as P=F*V

NOW F is calculated as F=m*a where a is accelaration

a=dv(t)/dt=d(4t-2)/dt=4m/s^2

F=m*4 N

P=m*4*(4t-2) watt/sec

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