Physics
Grade-7
Easy

Question

Which of the bodies given below has less kinetic energy when both have the same mass?
A) 1 m/s
B) 1 half m/s

  1. A
  2. B
  3. A & B
  4. None 

hintHint:

B

The correct answer is: B


    Kinetic energy is directly proportional to the square of its velocity. If an object has less velocity then its kinetic energy will also be less hence, B has lesser kinetic energy as it has less velocity than A.

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