Question

Calculate the kinetic energy of a body of mass 0.1 kg and momentum 20kg m s^-1.​

Answer 1

Answer:

The kinetic energy is 2000J

Explanation:

Given,

Momentum, p = 20 kgm/s

Mass of the body, m = 0.1 kg

We know,

p = mv

or, v = p/m

or, v = 20/0.1 m/s

or, v = 200 m/s

Again,

We know,

Kinetic energy = 1/2 m×v^2

= 0.5 × 0.1 × (200)^2

= 2000 J

Answer 2

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