Question

Kinetic energy e of a moving object of mass 30 kg e is 60 Joule calculate its speed

Answer 1

Answer:v=2 m/s

Explanation:m=30kg

Kinetic energy =60J

Hence,

Kinetic energy=1/2mv^2

60 = 1/2 ×30× v^2

v^2= 4

v=2m/s

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Answer 2

Given :-

Mass of the body (m) = 30kg

Kinetic energy = 60J

To Find :-

Speed (v)

Solution :-

We know :-

Kinetic energy = ½ mv²

➟ 60 = ½ × 30 × v²

➟ 60 = 15 × v²

➟ v² = ⁶⁰⁄₁₅

➟ v² = 4

➟ v = √4

➟ v = 2

Speed of the body is 2 m/s.✅

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