Translational Kinetic Energy Practice Test

A scooter of mass $M$ moves at speed $v$. A bicycle of mass $\tfrac{1}{2}M$ moves at speed $2v$. Treat each as a point mass. Which has the greater kinetic energy?

A cart of mass $m$ moves at speed $v$. A second cart of mass $2m$ moves at speed $v/2$. Which has greater kinetic energy?