MULTIPLE CHOICE
3) Knowing an object’s position requires which of the following?

A) speed
B) time
C) displacement
D) reference point

4) Two people are pulling on a chain in opposite directions with forces of 500 N and 600 N. The
forces would best be described as ____.

A) balanced forces
B) unbalanced forces
C) action-reaction forces
D) gravitational forces

5) The _____ can change when describing motion. It is just the chosen starting point.
A) displacement
B) distance
C) reference point
D) speed

6) Which of the following is NOT true of gravitational force?
A) noncontact
B) depends on mass
C) depends on speed
D) distance