Two bodies A and B of masses m and M (M ≫ m) have same kinetic energy. Which body will have more momentum?

Complete the following sentences

(a) The kinetic energy of a body is the energy by virtue of its ……

(b) The potential energy of a body is the energy by virtue of its ……

Name the form of mechanical energy, which is put to use.

Energy can exist in several forms and may change from one form to another. For each of the following, state the energy changes that occur in:

(a) the unwinding of a watch spring

(b) a loaded truck when started and set in motion

(c) a car going uphill

(d) photosynthesis in green leaves

(e) charging of a battery

(f) respiration

(g) burning of a match stick

(h) explosion of crackers