Net Work & Kinetic Energy Video Lessons

Concept

# Problem: An object speed is increased by a factor of three. What does this do to its kinetic energy?a) the kinetic energy increases by a factor of threeb) the kinetic energy increases by a factor of twoc) the kinetic energy increases by more than a factor of threed) the kinetic energy cannot be determinede) the kinetic energy increases, but less than by a factor of twof) It does not affect the kinetic energy

###### FREE Expert Solution

Kinetic energy:

$\overline{){\mathbf{K}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{2}}{{\mathbf{mv}}}^{{\mathbf{2}}}}$

K0 = (1/2)mv2

###### Problem Details

An object speed is increased by a factor of three. What does this do to its kinetic energy?

a) the kinetic energy increases by a factor of three

b) the kinetic energy increases by a factor of two

c) the kinetic energy increases by more than a factor of three

d) the kinetic energy cannot be determined

e) the kinetic energy increases, but less than by a factor of two

f) It does not affect the kinetic energy