# Physics

A car is moving at 50 miles per hour. The kinetic energy of that car is 5 × 105 J.
How much energy does the same car have when it moves at 114 miles per hour?

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3. 👁 385
1. Kinetic energy is proportional to mass and also varies with the square of the velocity.
So the new kinetic energy
=(5*105 joules)*(114/50)²

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2. 2599200

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