Question

what affects the motion of an object that rolls down a ramp? what affects the motion of an object that rolls down a ramp? @Physics

Answer 1

The forces acting on the object. What are the three forces?

Answer 2

gravity and friction and normal force!
the normal force is the reaction from contact with the ground.
the gravity is the reason that the body is rolling down the ramp,
the friction "opposes the motion"
since the body is rolling, it is experiencing static friction (not kinetic friction because there is no sliding going on during rolling)