Question

two bodies of equal masses moving with a uniform velocity v and 3 V respectively find the ratio of their kinetic energy

Answer 1

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⭐ BODY 1 : Mass = "m", Velocity = "v".
⭐ BODY 2 : Mass = "m", Velocity = "3v".

⭐ FOR BODY 1,
KINETIC ENERGY = 1/2 × m × v²
= 1/2 mv²

⭐ FOR BODY 2,
KINETIC ENERGY = 1/2 × m × 9v²

⭐ RATIO OF TWO KINETIC ENERGIES = 1 : 9 [Ans.]


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Answer 2

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❤ HERE IS YOUR SOLUTION ❤

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BODY 1 : Mass = "m", Velocity = "v". 

BODY 2 : Mass = "m", Velocity = "3v". 

FOR BODY 1, 
KINETIC ENERGY = 1/2 × m × v²
= 1/2 mv²

FOR BODY 2,
KINETIC ENERGY = 1/2 × m × 9v²

RATIO OF TWO KINETIC ENERGIES = 1 : 9

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