Question

a body of mass 50 kg moving with a velocity of 20 m per second find the kinetic energy of the body​

Answer 1

K.E=1÷2mv^2

Mass=50kg=50×10^3gm

K.E=5×10^5

Answer 2

The kinetic energy of the body is 10000 J or 10 kJ.

Given:

Mass of the body (m) = 50 kg

Velocity (v) = 20m

To Find:

The kinetic energy of the body.

Solution:

ΔKE= $\frac{1}{2} m v^{2}$

ΔKE= $\frac{1}{2} 50 . 20^{2} = 10000$

Hence, the Kinetic energy of the body is 10000 J or 10kJ.

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