Question

The kinetic energy possessed by a body of mass 20kg moving with a velocity of 10m/s is

Answer 1

Explanation:

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given that - Mass = 20kg

Velocity = 10 m/s

kinetic energy = ?

as we know that ,

kinetic energy = 1/2 mv2.

kinetic energy = 1/2 × 20 x 10 x 10.

kinetic energy = 1000 Joule.

kinetic energy = 1 KJ.

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Answer 2

Answer:

The kinetic energy of a body with a mass of 20 kg moving with a velocity of 10m/s is 1000j

Explanation:

• The kinetic energy of a moving body with mass (m) and velocity (v) can be calculated as

       $KE=\frac{1}{2}mv^{2}$

From the question, it is given that

mass of the body $m=20kg$

the velocity of the moving body $v=10m/s$

hence the kinetic energy of that body is

$KE=\frac{1}{2}*20*10^{2}$

⇒$KE=1000J$