Question

Why does a skateboard coasting on a flat surface slow down and eventually comes to a stop

Answer 1

The skateboard will slow down because of kinetic and static friction. Kinetic friction will cause it to slow down while it’s moving. It will eventually slow down to a point that its velocity can’t overpower the static friction, and it will stop.

Answer 2

It depends on what skateboard. It will stop mainly because some skateboards need a hill or curvy platform to function.