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20 March, 02:09

A car is traveling at 30 m/s with a kinetic energy of 900 J. What is it's mass?

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  1. 20 March, 02:32
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    You can use the equation: kinetic energy=mass/2*speed^2

    so 900=m/2*30^2

    when you solve it you get m=2.

    This means the mass of the car is 2kg
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