Question

Question 1
Which is a vector quantity?

a
velocity
b
speed
Question 2
What is the difference between distance and displacement?

a
Distance is the difference between how quickly you move between two points. Displacement is the average of that motion
b
Distance is measured in feet. Displacement is measured in meters
c
Distance is the length of travel. Displacement is the straight line distance between the starting point and the ending point
d
Distance is a measure of length of travel. Displacement is the measure of the time it takes to move that length
Question 3
Choose all of the following that represent scalars.

a
mass
b
position
c
velocity
d
time
e
volume
f
acceleration
Question 4
Which of the following is the scalar value?

a
Displacement
b
Distance
Watch the following video to review motion graphs.

Video #2

Video #3

Question 5
Use the graph to answer the question.





Where was the object after 2 seconds?

a
14m
b
6m
c
5m
d
4m
Question 6
Use the graph to answer the question.





Find the displacement in the time interval 3 seconds to 4 seconds.

a
1 m
b
7 m
c
9 m
d
3 m
Question 7
Using the graph, answer the following question:





When did the object reach 12 m beyond the starting point?

a
5 sec
b
3 sec
c
4sec
d
not enough data
Question 8
According to the position vs time graph below, at what time did David first start to move in a positive velocity (forward direction)?



a
At 0 minutes
b
At 3 minutes
c
At 5 minutes
d
At 7 minutes
Question 9
On a position versus time graph, if an object is not moving, what will the shape of this graph be?

a
Diagonal up
b
Diagonal down
c
Horizontal
d
Vertical
Question 10
Use the velocity versus time graph below to answer the question.



From 0 seconds to 15 seconds, what is true about the car?

a
It is not moving
b
It has a negative acceleration
c
It has a positive acceleration
d
It has a constant velocity
Watch the following video to review how to calculate velocity.

Video #4

Video #5

Question 11
If a car is traveling 50 km/hr, how many km will it cover in 2 hours?

v=d/t

a
100 km
b
25 km
c
.10 km
d
50 km
Question 12
If Mrs. Wade goes a distance of 10 m in 5 seconds, what is her velocity?

v=d/t

a
0.5 m/s
b
50 m/s
c
105 m/s
d
2 m/s
Question 13
Acceration is a change in motion over time

True
False
Question 14
Which of the following is an example of negative acceleration?

a
a car speeding up after leaving a stoplight
b
a car slowing down at a stoplight
c
a car going at a constant velocity down a highway
d
a runner speeds up at the end of a race
Question 15
If a car starts at rest and accelerates to 40 m/s in a time of 10 s. What is the acceleration of the car?

\large acceleration=\frac{v_{final}-v_{initial}}{time}

a
-4 m/s2

b
4 m/s

c
4 m/s2

d
400 m/s2

Watch the following video to review Newton's Law and Forces.

Video #6

Question 16
Magnitude is a measure of how strong a force is.

True
False
Question 17


The picture above represents an example of:

a
unbalanced forces
b
magnitude
c
balanced forces
d
net force
Question 18
When two forces are in opposite directions, and they are the exact same magnitude, the forces will:

a
eventually reach equilibrium
b
subtract from each other
c
cancel out
d
go on infinitely
Question 19
When forces are in opposite directions, they subtract from one another.

True
False
Question 20


In the picture above, which of the following is true?

a
both are examples of vectors
b
A. represents vector and B. represents scalar
c
A. represents scalar and B. represents vector
d
both are examples of scalar

Answer 1

Here are the answers I can give directly. For any question that refers to a graph or picture, I don’t have that image — I’ve marked those and asked for the graph/picture so I can answer them.

1) a (velocity)

2) c (Distance is the length of travel. Displacement is the straight-line distance between the starting point and the ending point.)

3) a, d, e (mass, time, volume are scalars)

4) b (Distance)

5) Need the graph/image to answer — please upload the position vs time graph used for this question.

6) Need the graph/image to answer — please upload the position vs time graph and the relevant interval (3 s to 4 s).

7) Need the graph/image to answer — please upload the position vs time graph showing when the object reaches 12 m.

8) Need the graph/image to answer — please upload David’s position vs time graph (we look for when the slope first becomes positive).

9) c (Horizontal)

10) Need the velocity vs time graph to answer — please upload it. (You determine this by checking whether the v–t line is flat, sloped positive, sloped negative, or at zero.)

11) a (100 km)

12) d (2 m/s)

13) True (acceleration = change in velocity divided by time)

14) b (a car slowing down at a stoplight)

15) c (4 m/s^2)

16) True

17) Need the picture to answer — please upload the image referenced.

18) c (cancel out)

19) True

20) Need the picture to answer — please upload the image showing A and B.

If you upload the missing graphs/pictures (or describe the plotted values/arrow directions), I’ll finish the remaining answers and show brief working where helpful.