Question

Calculate the kinetic energy of a girl of mass 25kg running at a velocity of 3m/s


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Answer 1

Given :

• Mass (m) = 25 Kg.
• Velocity (v) = 3 m/s.

To find :

• Kinetic energy (K.E).

Solution :

We know,

⟹ K.E = 1/2 × mv²

Since,

⟹ K.E = 1/2 × 25 × 3²

⟹ K.E = 12.5 × 9

⟹ K.E = 112.5 J

∴ The kinetic energy produced by the girl is 112.5 J.