If a baseball's velocity is increased to six times its original velocity, by what factor does its kinetic energy increase?
Question
If a baseball's velocity is increased to six times its original velocity, by what factor does its kinetic energy increase?
Solution
The kinetic energy of an object is given by the formula KE = 1/2 mv^2, where m is the mass and v is the velocity.
If the velocity is increased to six times its original velocity, we substitute 6v in place of v in the formula.
So, KE = 1/2 m(6v)^2 = 1/2 m(36v^2) = 18mv^2.
Therefore, the kinetic energy increases by a factor of 18 when the velocity is increased to six times its original velocity.
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