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Kinematics
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#Quick review of kinematics unit, #Evanko
Flashcards
28 cards
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Answers
1
A car moves 30 meters in 2.0 seconds, so it has an average speed of
15 m/s
30 m/s
60 m/s
0.067 m/s
2
the rate of your change in velocity is your
acceleration
frame of reference
speed
none of the above
3
A rate means that something is being measured or described as changing over
time
a distance
a repeating cycle
direction
4
What is the movement of an object toward the Earth solely because of gravity?
static
sliding
free-fall
rolling
5
A person walking 10 m/s goes to 15 m/s in 2.0 seconds. What is his average acceleration?
cannot be determined
10 m/s2
2.5 m/s2
5 m/s2
6
When you measure a quantity and a direction it is called a _______
scalar
vector
7
Another name for a push or a pull that acts on an object.
force
fluid
matter
mass
8
The straight line change in your position, including direction, is known as your
displacement
distance
velocity
speed
9
The slope of a position-time graph lets you know____ of the motion.
the velocity
the acceleration
the time elapsed
the displacement
10
What is a space without any matter in it?
fluid
vacuum
gas
filled
11
(v
f
- v
i
)/t is the equation for solving
velocity
time elapsed
acceleration
speed
12
When the net force is zero and there is no change in the object's motion, forces are said to be
centripetal
balanced
unbalanced
resistant
13
What is the tendency of an object to resist a change in its motion?
balanced force
unbalanced force
gravity
inertia
14
Your beginning point can be called your ____
destination
origin
homey
half-way point
15
A person walks a constant velocity of 15 m/s for 10 seconds. What is his acceleration?
-15 m/s2
15 m/s2
0 m/s2
1.5 m/s2
16
The rate of your change in displacement is your
speed
acceleration
velocity
time
17
A quantity that is fully described by a magnitude only is called a
scalar
vector
18
The x-axis of a position-time graph lets you know
the time elapsed of the motion
all of the above
the position of an object at any given moment
the velocity of the motion
19
The rate of your distance is your
velocity
speed
acceleration
time
20
When using Physics laws, time must be in units of
Hours
Minutes
Meters
Seconds
21
This can also be described by the equation: x
f
-x
i
and the symbol Δx.
displacement
position
distance
acceleration
22
A force that opposes the motion of objects that touch as they move past each other.
gravity
friction
floating
momentum
23
If an object goes backwards 20.0 meters in a straight line for 4.0 seconds its velocity is
5 m/s
80 m/s
-5 m/s
-80 m/s
24
What is the amount of matter in an object called?
mass
density
matter
weight
25
The meters of your total path, no matter what direction or shape, is your
distance
velocity
displacement
position
26
A person walking 15 m/s goes to 10 m/s in 2.0 seconds. What is her acceleration?
-2.5 m/s2
5 m/s2
2.5 m/s2
-5 m/s2
27
Two observers may observe the same object but disagree on its motion due to their having
Visual problems
Bias in judgement
Different frames of reference
Different units of measurement
28
What does the y-axis of a position-time graph tell you about the motion of an object?
its time elapsed
its velocity
its position at any given moment.
all of the above
