Physics
Grade-10
Easy

Question

An object of 10 kg moves with a uniform velocity of 2 m/s; what is the kinetic energy possessed by the object?

  1. 20 J

  2. 10 J

  3. 40 J
  4. 30 J

hintHint:

Kinetic energy can be calculated by 1/2 mv2

The correct answer is:

20 J


    Given:
    Mass of an object (m) = 10kg
    Velocity (v) = 2ms-1
    To find:
    Kinetic energy=?
    Solution:
    K i n e t i c space e n e r g y space equals space 1 half cross times m cross times v squared
K E space equals space 1 half cross times 10 cross times 4 space
K E space equals space 20 J
    Answer:
    The kinetic energy of the object is  20J

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