Net Work & Kinetic Energy Video Lessons

Concept

# Problem: A car is traveling at 10 m/s. By what factor does the car’s kinetic energy increase if its speed is doubled to 20 m/s?

###### FREE Expert Solution

Kinetic energy:

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

K0 = (1/2)mv2 = (1/2)(m)(102) = 50m

###### Problem Details

A car is traveling at 10 m/s.
By what factor does the car’s kinetic energy increase if its speed is doubled to 20 m/s?