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One of two lorries is half the weight of the other, but is moving at twice the speed of the other. Which of the lorries has more kinetic energy?

Need urgently help and please someone offer to help me with this exercise.. Thank you ^-^​

One of two lorries is half the weight of the other but is moving at twice the speed of the other Which of the lorries has more kinetic energyNeed urgently help class=

Respuesta :

Answer:

1 /2 (W / g)  V^2 = KE1

1/2 *(W / 2) / g * (2V}^2 = KE2 = 1/2 (W / 2 ) g * 4 V^2

KE2 / KE1 = 2

The lorry traveling at twice the speed has twice the KE

4 times energy due to speed but 1/2 the mass

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