Agree, but kinetic energy being mv^2/2 rather than mv can be pretty intuitive in the right context:

> Would you father get hit with:

> * a 1 kg object moving at 1 m/s or

> * a 1 g object moving at 1 km/s?

This. A tesla model Y going 60mph has almost 2 times the kinetic energy (75MJ) of the same car going 45mph (40MJ)

Your stupid brain thinks, oh I am just 10ish over the limit.