On any winter day at Whitefish Mountain Resort, it’s common to see a handful of people making the trek up the mountain.

If Gov. Larry Rhoden signs the law, only the slowest class of e-bikes would be allowed on the scenic Mickelson Trail.

The answer depends on the context. If you’re on a marked trail, for example, you should definitely stick to the prescribed switchbacks. But a more general answer involves digging into the physics.