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Work, Energy, and Power — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsWork, Energy, and Power1 Mark
MCQ
When an aeroplane takes off from the ground:
  • A
    Kinetic energy increases and Potential energy decreases
  • B
    Potential energy increases and Kinetic energy remains constant
  • C
    Both Kinetic energy and Potential energy remain constant
  • D
    Both Kinetic energy and Potential energy increase
✓

Answer

  1. Both Kinetic energy and Potential energy increase

Explanation:

Kinetic energy is due to the motion of the object and potential energy is due to relative elevation.

So as the plane takes off height increases and also its speed increase, so both kinetic and potential energy increases.

Kinetic energy$=\frac{1}{2}\text{min}^2$

Potential energy = mgH

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