Question

Important things in chapter work power energy for objective classes

Answer 1

Some important notes-

1. According to science work is only done when the object on which we are applying force is displaced

2. SI unit of work is Joule.

3.Energy can be converted to different forms but cannot be created or destroyed.Its SI unit is Joule.

4. If some opposing force is acting in the direction of force then work done will be in negative(W= -Fs)

5.Power is determined by the rate of doing work. Its SI unit is hp,watts or kilowatts.

6. Power= energy consumed / time taken