Q2.A ball of mass 1 kg and another of mass 2 kg are dropped from a tall building whose height is 80 m. After, a fall of 40 m each towards Earth, their respective kinetic energies will be in the ratio of
Answer : Option DExplaination / Solution: No Explaination.
Q4.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 of the jet. What is the rate at which kinetic energy is imparted to water ?.
Answer : Option AExplaination / Solution: No Explaination.
Q5.A body of mass 4 m is lying in xy-plane at rest.
It suddenly explodes into three pieces. Two pieces each of mass m move
perpendicular to each other with equal speed v. The total kinetic energy generated due to explosion is
Answer : Option BExplaination / Solution: No Explaination.