If a feather, a rubber ball and a wooden ball are falling freely simultaneously from the same height in the vacuum, then

The two balls of iron and wood of same weight dropped from the same height in air, then –

If pieces of equal size of woods, wax and iron falling from a same height, which one will reach the surface of the earth first?

If a person sitting in a lift then when will he feel that his weight gets increased?

A ball is dropped from the top of a high building . What will be its velocity after 3 seconds?

If the spinning speed of the earth increases, then the weight of the body at the equator will