Question

A body of mass 2kg is moving with a speed of 20ms-1 find the kinetic energy. (400j)

Answer 1

1/2mv2=1/2×2×(20)2=400J

Answer 2

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ANSWER :

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The mass of the object, m = 2 kg

The speed of the object, v = 20 m/s

The Kinetic Energy, K.E = ?

We know that ,

$kinetic \: energy = \frac{1}{2} mv ^{2}$

From this ,,,

Kinetic Energy ,K.E = 1/2 × 2 × (20)^2

K.E = 400 J

The Kinetic Energy is 400 J.

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