1) If the heart works 60J in one minute, what is its power?
2) Name the term used for the sum of kinetic energy and potential energy of a body.
3) In an oscillating pendulum, at what positions the potential and kinetic energies are maximum?
4) A 2m high person is holding a 25 kg trunk on his head and is standing at a roadways bus-terminal. How much work is done by the person?
5) What will cause greater change in kinetic energy of a body changing its mass or changing its velocity.