One car has 2 times the mass of a second car, but only 1/2 times the...

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One car has 2 times the mass of a second car, but only 1/2 times the kinetic energy of the second. When both cars increase their speed by 12.9 m/s they then have the same kinetic energy. What were the original speed of the car? (Your result must be in units of m/s and include 2 digit after the decimal point. Maximum of 5% of error is accepted in your answer.) One car has 2 times the mass of a second car, but only 1/2 times the kinetic energy of the second. When both cars increase their speed by 12.9 m/s they then have the same kinetic energy. What were the original speed of the car? (Your result must be in units of m/s and include 2 digit after the decimal point. Maximum of 5% of error is accepted in your answer.)