Question

the linear momentum of a body of mass 2 kg is 16kg ms . what is its kinetic energy

Answer 1

Kinetic energy is given by the formula:

(Momentum)²/2(mass)

GIVEN:

Linear momentum= 16kg m/s

Mass=2kg

So: (16)²/2(2) = 256/4 = 64 Joules

Answer 2

The kinetic energy of the body is 64 J.

Explanation:

Given that,

Mass of the body, m = 2 kg

Linear momentum of the body, p = 16 kg-m/s

We need to find the kinetic energy of the body. We know that the kinetic energy in terms of linear momentum is given by :

$K=\dfrac{p^2}{2m}$

$K=\dfrac{(16)^2}{2\times 2}$

K = 64 J

So, the kinetic energy of the body is 64 J. Hence, this is the required solution.

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