a running man has half the kinetic energy that a boy of half his mass has.the man speed up by 1m/s and then has the same kinetic energy as the body. what were the original speeds of man and boy?
How light has a dual nature? A photon has zero rest mass. Explain how ? (These questions were posted by Shubham SInha and Ritika Chatak) Answer: The dual nature of light has been established through the various theories in an attempt to find out the real nature of light. The first theory on the nature of … Continue reading Dual nature of light and related questions