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Speed Velocity, Scalar Vector
Test Description: Calculations of speed and velocity, differences between them conceptually
Instructions: Answer all questions to get your test result.
1) Speed is...
A
scalar, it has size only
B
scalar, it has size and direction
C
vector, it has size only
D
vector, it has size and direction
2) Velocity is...
A
vector, it has size only
B
scalar, it has size only
C
vector, it has size and direction
D
scalar, it has size and direction
3) If it takes 6 hours to drive 300 km, what is the speed?
A
1800 km/hr
B
60 km/hr
C
306 km/hr
D
50 km/hr
4) Which is NOT a way to accelerate?
A
speed up
B
change direction
C
no motion
D
slow down
5) A ball rolls 48 m in 6 seconds to the left, what is the velocity?
A
-8 m/s
B
0 m/s
C
+8 m/s
D
8 m/s
6) A cat walks 12 m left, then 6 m right, then 2 m left, then 8 m right. What is the distance?
A
28 m
B
0 m
C
28 m left
D
28 m right
7) A cat walks 12 m left, then 6 m right, then 2 m left, then 8 m right. What is the displacement?
A
28 m
B
0 m
C
28 m right
D
28 m left
8) An elevator goes up 20 feet, then down 30 feet, then up 50 feet. This takes 5 minutes. What was the average speed?
A
+8 ft/min
B
-8 ft/min
C
20 ft/min
D
20 ft/min up
9) An elevator goes up 20 feet, then down 30 feet, then up 50 feet. This takes 5 minutes. What was the average velocity?
A
+8 ft/min
B
20 ft/min up
C
-8 ft/min
D
20 ft/min
10) A runner completes one full lap on a 100-m track in 20 seconds. What was the speed?
A
2000 m/s
B
Remember... speed uses the total distance traveled
C
5 m/s
D
0 m/s
11) A runner completes one full lap on a 100-m track in 20 seconds. What was the velocity?
A
5 m/s
B
0 m/s
C
Remember... velocity uses the displacement from the reference point
D
2000 m/s
12) What is the point that is used to see if motion happened?
A
bonus point
B
reference point
C
excellent point
D
melting point
13) What makes velocity different from speed?
A
velocity uses distance and time
B
velocity has a direction and uses displacement
C
speed has no direction and uses displacement
D
speed uses displacement and time
14) What is the speed of an object that travels 350 m in 70 seconds?
A
5 m/s
B
0.2 m/s
C
2.0 m/s
D
50 m/s
15) What does speed need to be a velocity?
A
direction
B
motion
C
time
D
distance
16) When acceleration is zero, what happens to the motion?
A
increasing motion
B
constant motion
C
changing motion
D
decreasing motion
*select an answer for all questions
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