1.
A bird flying in the sky has
2.
A body rolling down a hill has
3.
The mass of an object P is double the mass of Q. If both move with the same velocity, then the ratio of K.E. of P to Q is
4.
An object of mass 1 kg has a P.E. of 1 J relative to the ground when it is at a height of about
5.
A stretched spring possesses............. energy.
6.
What is the momentum of a body of mass 100 g, having a K.E. of 20 J?
8.
A ball of mass 200 g falls from a height of 5 m. What is its K.E. when it just reaches the ground?
9.
A total of 4900 joule was expended in lifting a 50 kg mass. The mass was raised to a height of
10.
A raised hammer possesses
