# Write an expression for the kinetic energy of an object. - Science

Write an expression for the kinetic energy of an object.

#### Solution

If a body of mass m is moving with a velocity v, then its kinetic energy Eis given by the expression,

E_k=1/2"mv"^2

Its SI unit is Joule (J).

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#### APPEARS IN

NCERT Class 9 Science Textbook
Chapter 11 Work and Energy
Q 2 | Page 152