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# Which has a greater effect on the kinetic energy of an object: mass or velocity? Why?

Feb 14, 2016

Velocity

#### Explanation:

We know that in Classical mechanics,
Kinetic energy $K E = \frac{1}{2} {\text{mass"*"velocity}}^{2}$
From this expression we see that

$K E \propto \text{mass}$
i.e., Kinetic energy is directly proportional to the mass.

Also $K E \propto {\text{velocity}}^{2}$
i.e., Kinetic energy is proportional to the square of the velocity.