A ball of mass 12 kg and another ball of mass 6 kg are dropped from a 60 feet height building when they are at 30 feet their kinetic energy will be in ratio of
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Mass of First Ball=12 kg
Mass of Second Ball=6 kg
They will attain same velocity .But Mass is different
Let Velocity (v)=X m/s
KE=1/2 mv²
1st ball=1/2×12×x²
1st Ball KE=6x²
2nd ball=1/2×6×x²
2nd Ball KE=3x²
Ratio=6x²/3x²
Ratio of KE=2:1
Mass of Second Ball=6 kg
They will attain same velocity .But Mass is different
Let Velocity (v)=X m/s
KE=1/2 mv²
1st ball=1/2×12×x²
1st Ball KE=6x²
2nd ball=1/2×6×x²
2nd Ball KE=3x²
Ratio=6x²/3x²
Ratio of KE=2:1
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