Question

3.1.2 quiz: newtons laws of motion
question 5 of 10
you slide across an icy sidewalk and eventually come to a stop. according to newtons first law, why are you no longer in motion?
a. you are subject to unbalanced forces.
b. inertia forced you to stop.
c. you are subject to balanced forces.
d. there is too much air resistance.

Explanation:

Newton's first law states that an object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an unbalanced force. When sliding on an icy sidewalk and coming to a stop, it's because of unbalanced forces like friction between the ice - surface and the object (person). Inertia is the tendency to resist changes in motion and doesn't force an object to stop. Balanced forces would keep an object in its current state of motion (either moving at a constant velocity or at rest). Air resistance is usually negligible compared to friction in this case.

Answer:

A. You are subject to unbalanced forces.