Why is coal considered a nonrenewable resource? check all that apply.
1.coal is burned to generate electricity.
2.coal power plants give off large quantities of smoke and ash.
3.coal forms so slowly that we could use up the supply that exists now.
4.coal is available in limited amounts.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p