6. Which of the following illustrates acceleration?
A. Constant velocity
B. Changing direction
C. The direction does not chang
D. The speed and direction remains the same
7. The following are correctly matched, EXCEPT
A. Speed: Scalar
B. Velocity: Vector
C. Distance: Scalar
D. Displacement: Scalar
8. What does a line on a graph that is curving upwards mean in a distance-time graph?
A. The object is not moving.
B. The object has a constant speed.
C. The speed of the object is increasing. D. The speed of the object is decreasing. 9. The following units can be used to mathematically express speed, EXCEPT A. m
B. m/s
C. km/hr
D. miles/hr
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