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