3. A train moves at a constant velocity of 50 km/h. How far will it move in 0.5 h?

4. You drive 6.0 km at 50 km/h and then another 6.0 km at 90 km/h. Your average speed over the 12 km drive will be

5. If the acceleration of an object is zero, then that object cannot be moving.

a. True

b. False

6. Which answer choice below includes only scalar quantities?

a. Acceleration, energy, displacement

b. Distance, speed, time

c. Velocity, displacement, force

d. Displacement, time, acceleration

e. Force, time, velocity

7. An airplane is in flight. Which of the following is an example of a vector?

a. The velocity of the plane

b. The angle at which the plane flies

c. The speed of the plane

d. The distance travelled by the plane

e. None of the above