Question

Which of the following correctly expresses power? Power is work. Power is the rate at which work is done. Power is determined by mass. Power is determined by work and mass.

Answer 1

In mechanics, power is the rate of doing work.

Answer 2

Thank you.

Answer 3

Mathematically
\[Power = \frac{Work}{time}\]In physics, this is typically: \[Power=Watts=\frac {J}{s}=\frac{Nm}{s}=\frac{kg m^2}{s^3}\]