JEE Physics: Work, Energy and Power

Question 1

Work done is defined as:

Accepted Answer

Force × displacement in direction of force

Question 2

The SI unit of power is:

Accepted Answer

Watt

Question 3

A body of mass 2 kg moving at 3 m/s has kinetic energy:

Accepted Answer

9 J

Question 4

The work-energy theorem states:

Accepted Answer

Net work = change in kinetic energy