Question

Find the velocity of a body whose mass is 10 kg and kinetic energy is 80J?​

Answer 1

Answer:

v = 4m/s

Explanation:

Given:

Mass of the body (m) = 10kg

Kinetic energy (K.E.) = 80J

The velocity of the body (v) =?

Using kinetic energy formula

K.E. = mv²/2

⇒80 = 10v²/2

⇒ 80 × 2 = 10v²

⇒ v² = 160/10 = 16

⇒ v = √16

⇒ v = 4m/s

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