Physics - Please Help
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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Answers
a) 10.23 m/s b) 5.12 m/s. To have the same kinetic energy, the first car's original speed must be twice as much as the second car's original speed since it has twice the mass. Therefore, the second car's original speed must have been half of the first car's original speed, which is 5.12 m/s.
