# Calculating total kinetic energy of a car at a given velocity

When calculating the total kinetic energy do i have to take into account the rotational kinetic energy of the wheels?

Nugatory
Mentor
Yes. It's kinetic energy so it contributes to the total kinetic energy.

Thanks

jtbell
Mentor
But is the RKE of the wheels significant compared to the translational KE of the car? It might make an instructive exercise to calculate the RKE of e.g. a solid disk of mass M rotating with angular speed ω = v/R where v is the linear speed of the car and R is the radius of the wheel.

sophiecentaur