Question

Find the mass of a body which has 5 joule of kinetic energy will moving at a speed of 2 metre per second

Answer 1

Answer:

Find the mass of a body which has 5 J of kinetic energy while moving at a speed of 2 m/s. Mass of the body = m kg. KE=12mv2⇒5J=12×m×2×2⇒m=52=2.5kg.

Explanation:

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Answer 2

Answer:

2.5 kg

Explanation:

WE KNOW THAT

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

$5 = \frac{1}{2} m {(2)}^{2}$

$m = \frac{5}{2}$

$m = 2.5 \: kg$