MEDAL!!!!
If i'm driving in a car at 30kph and a friend is driving in a car with the same mass at 60kph, my friend's car's kinetic energy is bigger than mine by a factor of what? (that is, divide my friend's over mine.)

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Hint:
Kinetic Energy (KE)
KE = (1/2)*m*v^2
m = mass
v = velocity

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