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Kinetic energy is a measure of an object's quantity of motion; when you buy gasoline, the energy you're paying for will be converted into the car's kinetic energy (actually only some of it,
since the engine isn't perfectly efficient). The kinetic energy of an object with mass 
and velocity 
is given by 
. For a car accelerating at a steady rate, with 
, find the rate 
at which the engine is required to put out kinetic energy. 
, with units of energy over time, is
known as the power. Check that your answer has the right units, as in Example.
and velocity is given by . For a car accelerating at a steady rate, with , find the rate at which the engine is required to put out kinetic energy. , with units of energy over time, is
known as the power. Check that your answer has the right units, as in Example.
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