31. What is the product of mass and velocity called?
32. If the value of work is positive then the kinetic energy of the body-
33. An object of mass 12kg is placed at a certain height from the ground. If the potential energy of the object is 600J, find the height from the ground of the object?
34. If a boy covers a distance of 20 meters with 600 Newton force in 4 minutes, then the amount of power consumed by the boy is?
35. It is difficult to walk on the ice than on the road because
36. When a body is made to slide over a rough horizontal surface, the work done by the frictional force is
37. During the free fall of an object, which of following energy increases at one point in its path?
38. When a freely falling object eventually stops on reaching the ground,
39. A ball weighing 0.1 kilogram is dropped from a stationary position when it falls from a distance of 2 meters, then what will be the work done by the force of gravity.
40. What type of energy does a stretched rubber band have?
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