Question

Why the potential Energy (P.E) of a
body does not completely change into
Kinetic Energy when it falls through air? ​

Answer 1

Answer:

Nice question mate !!!

The potential energy of a body must change completely into its kinetic energy. But it can happen only in ideal conditions. But also ideal conditions are not possible. Many other resistive force act on a body falling in air.

Hence from work energy theorem,

ΔK = (ΔW)g + (ΔW)resistive forces

Hence there is always loss in energy.

Hope this helps !!!

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