When you know both the speed and direction of an object’s motion, you know the
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Question 3
3.
Which of the following is the SI unit for speed ?
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Question 4
4.
Two objects traveling at the same speed have different velocities if they:
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Question 5
5.
The International System of Units is used by scientists
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Question 6
6.
If you know a car traveled 300 kilometers in 3 hours, you can find its
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Question 7
7.
Suppose you are sitting in a car at a red light when a car moving toward the north begins to pass you. If you use the passing car as a reference point, the direction in which you appear to be moving is toward the_______
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Question 8
8.
The basic SI unit of length is the_______ .
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Question 9
9.
If two lines appear on the same motion graph, the line with the steeper _______ indicates a greater speed.
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Question 10
10.
A _______ is a place or object used for comparison to determine if something is in motion.
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Question 11
11.
_______ is the length of the path between two points.
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Question 12
12.
If a toy car traveling at 10 cm/s passes a toy car moving at 10 cm/s in the opposite direction, both cars have the same velocity.
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Question 13
13.
Speed in a given direction is called velocity.
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Question 14
14.
Most objects do not travel at a constant speed.
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Question 15
15.
Motion is measured relative to a reference point.
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Question 16
16.
Average speed is the rate at which an object is moving at a given instant.
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Question 17
17.
A straight diagonal line on a distance-versus-time graph indicates constant speed.
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Question 18
18.
What two variables are plotted on the graph?
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Question 19
19.
How far did Kathy jog in the first 4 minutes?
_______ m.
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Question 20
20.
Explain how to find the average speed of a car that travels 300 kilometers in 6 hours. Then find the average speed.
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Question 21
21.
Suppose you are on a train. List 1 object that make good reference points to determine whether or not the train is moving,