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Motion
Test Description: Motion, speed, velocity, and acceleration
Instructions: Answer all questions to get your test result.
1) Speed measurements are given in units of
A
time/distance (s/m)
B
distance/time (m/s)
C
distance/time2 (m/s2)
D
time2/distance (m2/s)
2) Measurements of acceleration are given in units
A
time2/distance (s2/m)
B
distance/time (m/s)
C
Speed/time2 (m/s2)
D
time/distance (s/m)
3) An airplane that moves 50 meters in one second has a speed of
A
50,000 m/s
B
1800 km/h
C
50 m/s
D
180,000 m/h
4) How many meters are in a kilometer?
A
1,000,000
B
1000
C
100,000
D
100
5) A car traveling at 25 m/s speeds up to 40 m/s over a period of 15 seconds. The average acceleration of the car is
A
cannot be calculated from the information given
B
15 km/s2
C
15 m/s2
D
1 m/s2
6) A rider finishes a 120 kilometer bicycle trip in 3 hours. The average speed of the rider is what?
A
11.1 m/s
B
40 km/hr
C
360 km/hr
D
3.6 m/s
7) It can be important to know the velocity of an object, not just its speed, because
A
velocity also tells acceleration
B
velocity also tells direction
C
speed is only useful for fast-moving objects
D
speed is always an average
8) A runner starts a 5 km race at 10:15 a.m. and finishes at 10:35 a.m. Given this information, you can calculate the runner's
A
velocity
B
average speed
C
reference point
D
acceleration
9) An airplane flies west 80 kilometers in 10 minutes. What is the airplane's velocity?
A
1333.3 m/s
B
1333.3 m/s W
C
8000 m/s W
D
8 m/s W
10) For an object to be accelerating it can be doing three things. Which of the following is NOT one of those three things?
A
sitting at rest
B
changing direction
C
increasing speed
D
decreasing speed
*select an answer for all questions
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