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Speed And Velocity 1
Test Description: Speed and velocity
Instructions: Answer all questions to get your test result.
1) If you were standing under a tree, which object would appear to be moving?
A
the building
B
the airplane
C
the tree
D
the boy
2) A passenger in the rear seat of a car moving at a steady speed is at rest relative to
A
a pedestrian on the corner ahead
B
the front seat of the car
C
the wheels of the car
D
the side of the road
3) Which distance can be most accurately measured with a ruler?
A
the distance between two cities
B
the length of a river
C
the width of a book
D
the size of an object under a microscope
4) One kilometer equals 1000 meters. What does the prefix kilo- mean?
A
100
B
1
C
10
D
1000
5) What is the most appropriate SI unit to express the speed of a cyclist in the last leg of a 10 km race?
A
km/s
B
km/h
C
cm/h
D
mm/s
6) Speed is the ratio of the distance an object moves to
A
the motion of the object
B
the displacement of the object
C
the amount of time needed to travel the distance
D
the direction the object moves
7) Instantaneous speed is measured
A
at a particular instant
B
when the object reaches it destination
C
at the starting point
D
over the duration of the trip
8) The slope of a line on a distance-time graph is
A
displacement
B
time
C
distance
D
speed
9) The rate at which velocity changes is called
A
vectors
B
motion
C
speed
D
acceleration
10) Which example identifies a change in motion that produces acceleration?
A
a speed skater moving at a constant speed on a straight track
B
a particle moving in a vaccuum at constant velocity
C
a vehicle moving down the street at a steady speed
D
a ball moving at a constant speed around a circular track
11) Objects in free fall near the surface of the Earth experience
A
constant velocity
B
constant speed
C
constant acceleration
D
constant distance
12) Which example describes constant acceleration due ONLY to a change in direction?
A
traveling around a circular track
B
increasing speed while traveling around a curve
C
an object at rest
D
an object in free fall
13) The slope of a speed-time graph indicates
A
acceleration
B
velocity
C
direction
D
speed
14) An object that is accelerating may be
A
all of the above
B
gaining speed
C
slowing down
D
changing direction
15) What is instantaneous acceleration?
A
how fast a velocity is changing at a specific instant
B
all of the above
C
how fast a direction is changing at a specific instanct
D
how fast a speed is changing at a specific instant
16) Which of the following statements is true?
A
an object that has an instantaneous acceleration, even if the acceleration vector is zero
B
an object at rest has an instantaneous acceleration of zero
C
an object that is accelerating is always changing direction
D
instantaneous acceleration is always changing
*select an answer for all questions
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