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 > An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water :

An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water :

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:-