Question

16. A wooden block of mass 10 gm is dropped from the top of a tower 100 m high. Simultaneously, a bullet
of mass 10 gm is fired from the foot of the tower vertically upwards with a velocity of 100 ms−1
. If the
bullet is embedded in it, how high will it rise above the tower before it starts falling?

Answer 1

Law of conservation of energy,energy can only be transformed from one form to another form ,it can neither be created nor destroyed.the total energy before and after the transformation always remains the same