The kinetic energy, K, of an object varies jointly with its mass, m, and the square of its velocity, v. The mass of an object stays the same, but the velocity of the object is halved. How is the kinetic energy of the object affected?
a) The kinetic energy is quadrupled.
b) The kinetic energy is halved.
c) The kinetic energy is quartered.
d) The kinetic energy is doubled.
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