Question

the kinetic energy of a body of mass 4kg moving with velocity of 2m/s is​

Answer 1

$m = 4 \: kg \\ \\ v = 2 \: m/s \\ \\ KE = ? \\ \\ = > KE = \frac{1}{2} mv {}^{2} \\ \\ = \frac{1}{2} \times 4 \times 2 {}^{2} \\ \\ = \frac{1}{2} \times 4 \times 4 \\ \\ = \frac{16}{2} \\ \\ = 8 \: J$

I hope this helps.

Answer 2

Answer:

KE = 1/2 mv²

= 1/2 × 4 ×2²

= 1/2 × 4 × 4

= 1 ×2 × 4

= 8 joule

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