Posted by **Emily** on Tuesday, February 8, 2011 at 10:13pm.

Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 3.41 m/s, they then have the same kinetic energy.

a) What is the original speed of the first car?

b)What is the original speed of the second car?

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