1. A car moved 80 km to the South. What is its displacement?
A. 20 km South
C. 80 km South
B. 50 km East
D. 160 km North
2. Average velocity can be calculated by dividing displacement over what?
A time
C. mass
B. distance
D. density
3. If you are walking at constant velocity of 8 km/h and a car passed you by at the
speed of 30 km/h from behind, what is the car's velocity from your viewpoint?
A 22 km/h
C: 38 km/h
B. 30 km/h
D. 40 km/h
4. Acceleration is the measure of the change in what?
A. density
C. velocity
B. motion
D. mass
5. If a car accelerates from 3 m/s to 12 m/s in 3 seconds, what is the car's average
acceleration?
A. 1 m/s2
C. 3 m/s2
B. 2 m/s2
D. 4 m/s2​