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Kinematics
Test Description: First Test
Instructions: Answer all questions to get your test result.
1) The USS Enterprise accelerates from rest at 100,000 m/s2 for a time of four seconds. How far did the ship travel in that time?
A
400,000 meters
B
16,000 meters
C
800,000 meters
D
10,000 meters
2) A train decreases speed from 30 m/s to 20 m/s while traveling a distance of 250 meters. What is the acceleration of the train?
A
1 m/s2
B
1 m/s
C
-1 m/s
D
-1 m/s2
3) When acceleration is negative, what does that mean?
A
the car is going faster
B
acceleration can never be negative
C
the car is slowing down or going opposite from the direction of the velocity
D
the car is not moving
4) Can time be negative?
A
what is time?
B
yes
C
no
D
does it matter?
5) what are the units for acceleration, velocity, time and displacement, respectively?
A
s, m, m/s, m/s2
B
m/s2, m/s, s, m
C
m/s, m/s2, s, m
D
m, s, m/s, m/s2
6) What is acceleration?
A
the rate of change in velocity
B
the rate of change of time
C
the rate of change of momentum
D
the rate of change of distance
7) what is the displacement?
A
the change of time of an object
B
i dont know
C
the change of distance of an object
D
the change in position of an object
8) Starting from rest, the roadrunner accelerates at 3 m/s2 for ten seconds. How far does the roadrunner trace during 10 second time interval?
A
300 meters
B
150 meters
C
300 m/s
D
150 m/s
9) A car travels at 25 m/s to the north. It has an acceleration of 2 m/s2 to the south for a duration of twenty seconds. What is the final velocity?
A
15 m/s
B
none of the above
C
65 m/s
D
-15 m/s
10) what is velocity?
A
total displacement multiplied by the time interval during which the displacement occured
B
total displacement divided by the time interval during which the displacement occured
C
total distance divided by the time interval during which the displacement occured
D
total distance multiplied by the time interval during which the displacement occured
*select an answer for all questions
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