Mr. Manning's Forces Review

Two objects of different mass are sitting next to each other on the floor.  How does the upward force of the floor (the normal force) on the larger box compare to the normal force on the smaller box?

• The larger box has a larger normal force

• The larger box has a smaller normal force

• The two have the same normal force

The net force, ΣF, refers to

• The force of gravity

• The normal force opposing gravity

• The sum of all forces acting on an object

A box is being pushed towards the left at a constant speed along a level floor. The force of friction on the box acts:

• Upward

• Downward

• Rightward

• Leftward

Unless acted upon by a(n) _________________, an object at rest or an object in motion will remain at rest or in motion.

• Balanced Force

• Unbalanced Force

Two cars collide head-on. At every moment during the collision, the magnitude of the force the first car exerts on the second is exactly equal to the magnitude of the force the second car exerts on the first.  This is an example of

• Newton’s 1st Law

• Newton’s 2nd Law

• Newton’s 3rd Law