1. It is the distance over time. a. time
b. speed
c. direction
2. It is also called speed with direction.

a. velocity
b. acceleration
c. distance over time

This is a required question
3. A unit for measuring distance.

a. liter
b. kilogram
d. kilometers
4. It is the space between two objects.

a. distance
b. velocity
c. acceleration
5. The reference is an object that stays in place.

a. distance
b. point
c. time
Option 3
6. A unit for measuring time.

a. second
b. kilometers
c. liter