Question

give one example to illustrate that heat can be generated from the energy of motion

Answer 1

HEY!!

HERE IS YOUR ANSWER,

Heat is given out or is generated during motion. As it is the energy for motion and when there is movement this energy is also given out, as an energy , it helps in movement of molecules. i.e. When the molecules of any matter gain this energy the start moving.

The example to prove that heat is evolved during motion :

When we rub our palms together movement is taking place or there is motion . Then, after sometime we feel our palms becoming warmer. So, we come to the conclusion that heat is being generated during motion.

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Answer 2

Heat can always be generated from motion.

This is from the Law of Conservation of mass and energy .

" By Law of conservation of mass and energy , energy can change from one form to other but it can neither be created nor destroyed ".

Here are several examples of change of energy from mechanical to heat :

• When we rub our hands , the motion generates heat.

• The car parts in motion gets heated up after some time .

• Waterfall generates heat too.

• When a person runs his body gets warmed up .

All these changes obey the Law of Conservation.

Whatever be the change , the total amount of energy is always constant .

We can verify the above Law too by finding out each energy in its units.