Physics Principles and Problems 2009

Section 2.4 : How Fast?

Self-Check Quizzes

1
_____ is the change in position divided by the time during which the change occurred.
A)Average velocity
B)Average speed
C)Instantaneous velocity
D)Instantaneous speed
2
What is the average velocity of the object represented in this graph?

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A)1 m/s
B)2 m/s
C)1.5 m/s
D)2.5 m/s
3
_____ is how fast an object is moving.
A)Average time
B)Average speed
C)Edited speed
D)Final speed
4
You drive a car for 3.0 h at 97 km/h, then for another 3 h at 72 km/h. What is your average velocity?
A)85 m/s2
B)85 km/s2
C)-85 km/h
D)85 km/h2
5
Based on this graph, what is the object's velocity at t = 2 s?

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A)4 m/s
B)0 m/s
C)-5 m/s
D)5 m/s
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