Question Answers

Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 7 - Work, Energy and Power > A block of mass 10 kg is moving in x-direction with a constant speed of 10 m/s. It is subjected to a retarding force F = 0.1 x J/m during its travel from x=20m to x=30cm. Its final kinetic energy will be

A block of mass 10 kg is moving in x-direction with a constant speed of 10 m/s. It is subjected to a retarding force F = 0.1 x J/m during its travel from x=20m to x=30cm. Its final kinetic energy will be

A body of mass 3 kg is under a constant force which causes a displacement s in metres in it given by the relation s=1/3​t^2 where t is in seconds. Work done by the force in 2 seconds is:-