Question

use newton's first law of motion to explain why you feel tossed around whenever a roller coaster goes over a hill or through a loop

Answer 1

Newton's First law of motion:  An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
This is also known as the law of inertia
Anyways,  you feel tossed around because unbalanced forces are acting upon you while riding on a roller coaster.  Hope this helps!

Answer 2

Explanation:

A roller coaster is hard to stop because it has a lot of inertia. Inertia can be simplified to, "objects want to keep doing what they are doing." It's when they are forced to do something different that they are doing that is why roller coaster riders experience the float or tossing around of the ride.