1. A woman drives to her office 20 km away from her house at 7 a.m. and reaches her office at 7:20 a.m. She stays in the office until 5 p.m. and returns home at 5:25 p.m. Which best describes her distance and displacement at 6:25 p.m.?

a. Both her distance and displacement are 0.
b. Both distance and displacement she covered are 40 km.
c. The distance she covered is 0 and displacement is 40 km.
d. The distance she covered is 40 km and displacement is zero.

2. What is the SI unit for a physical quantity defined as the distance traveled per unit of time?
a. m
b. m/s
c. m/s2
d. km/h