Physics
Grade-7
Easy

Question

Velocity is ____ proportional to the kinetic energy.

  1. Directly
  2. Inversely
  3. Initially directly and then inversely
  4. Initially inversely and then directly

hintHint:

Directly

The correct answer is: Directly


    Kinetic energy is directly proportional to the square of its velocity. Hence, if the velocity is doubled, the kinetic energy quadruples.
    K.E. = 1/2mv2

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