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18-02-2021
Physics

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What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels evenly at 70 km/h?

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trebor5x trebor5x

18-02-2021

V= 70 km/h = 70 *(1000/3600)= 19.44 m/s

m=0.5 t = 500 kg

Ek=?

Ek=0.5*m*V²

Ek=0.5*500*19.44²

Ek = 94522 J = 94.522 kJ

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