Question

prove that instantaneous power can be expressed as equal to vector f. vector v

Answer 1

power is defined as the rate of doing work
so by this definition we can drive a formula for power where p = work ÷ time

now deriving the formula,
P=W/t
=F.S/t
=F x S/t
=F.v

*P=Fv
*S/t=v
*s means displacement
*t means time
*f means force

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