Explain Using the equation for translational kinetic energy, show why a car moving at 40 m/s has four times the translational kinetic energy of the same car moving at 20 m/s.

Explanation:

Equation for translational kinetic energy = 1/2 m V² where m is mass and V is velocity .

In first case let mass of car be m

Translational kinetic energy = 1/2 m x 40² = 800 m .

In the second case ,

Translational kinetic energy = 1/2 m x 20² = 200 m

So , in former case kinetic energy of car is 4 times that of second case.

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