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A girl weighing 42 kg eats bananas whose...

A girl weighing 42 kg eats bananas whose energy is 980 calories. If this energy is used to height h find the value of h. (J=4.2J calorie)

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Energy gained by the girl in eating bananas
=980 calories =980xx4.2J.
W=H(in S.I.)
`980xx4.2=mgh rArr 980xx4.2=42xx9.8xxh`
`rArrh=(980xx4.2)/(42xx9.8)=10m`
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