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Work, Power And Energy — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWork, Power And Energy1 Mark
MCQ
A body is falling from a height h. After it has fallen a height $\frac{\text{h}}{2},$ it will possess:
  • A
    Only potential energy.
  • B
    Only kinetic energy.
  • ✓
    Half potential and half kinetic energy.
  • D
    More kinetic and less potential energy
✓

Answer

Correct option: C.
Half potential and half kinetic energy.
When the body is at height h; its potential energy is at maximum and kinetic energy is zero. When the body hits the ground, its potential energy becomes zero and kinetic energy is at maximum. At mid-way, i.e. half the height; its potential energy becomes half of the maximum potential energy and same happens to the kinetic energy.

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