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7(i) A bike and a car have exactly same value of momentum. Whose kinetic energyis more, and why?

AnswerΒ»

𝑻𝒉𝒆 π’ƒπ’Šπ’Œπ’† 𝒉𝒂𝒔 π’Žπ’π’“π’† π’Œπ’Šπ’π’†π’•π’Šπ’„ π’†π’π’†π’“π’ˆπ’š 𝒂𝒔 π’Šπ’• 𝒉𝒂𝒔 𝒍𝒆𝒔𝒔 π’Žπ’‚π’”π’”.

PΒ² KE = ------ 2m

So, we know the mass of the car is more than a bike so, as momentum is the same.And the above expression tells that kinetic energy is inversely proportional to mass.The bike has more kinetic energy as it has less mass.



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