Question

If position of a particle of mass 1kg varies with time is given by x = t² + 2t - 1, then average power developed in 1 second

Answer 1

Power can be defined as work performed in the unit time by the body.

Such that by using differential method we can find velocity .After that Kinetic energy can be calculated at t=0s and t=1s

Power=workdone/time

According to such description,

Ans.1 Watt