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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 7 - Work, Energy and Power > The velocity-time graph of a particle moving in a straight line is shown in figure. The mass of the particle is 2kg. Work done by all the forces acting on the particle in time interval between t=0 to t=10s is

The velocity-time graph of a particle moving in a straight line is shown in figure. The mass of the particle is 2kg. Work done by all the forces acting on the particle in time interval between t=0 to t=10s is

A man M1 of mass 80kg runs up a staircase in 15s. Another man M2 also of mass 80kg runs up the same staircase in 20s. The ratio of the power development by then will be: