Consider the formula for determining kinetic energy:

K.E. = 1/2 m v^2

Which factor would have the greatest impact on the magnitude of kinetic energy?

a. mass
b. velocity
c. gravity
d. Impossible to determine

The factor that would have the greatest impact on the magnitude of kinetic energy is velocity (b). This is because the formula includes velocity raised to the power of 2, whereas mass is only multiplied by 1/2. As a result, doubling the velocity would quadruple the kinetic energy, whereas doubling the mass would only double the kinetic energy.