Question

A moving body of mass 10kg has 20J of kinetic energy. Calculate it's speed

Answer 1

Answer:

answer is 2 m/s

Explanation:

m=10 kg , Kinetic energy= 20 J

we know that

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

$20 = \frac{1}{2} \times 10 \times {v}^{2}$

${v}^{2} = 4$

$v = 2m {s}^{ - 1}$

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