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Forces and Motion

Total questions: 75

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

What is the force that opposes the motion of objects sliding against each other?

a)

Attraction

b)

Friction

c)

Slipperiness

d)

Resistance

2.

Which force causes objects to fall towards the Earth?

a)

wind

b)

magnetism

c)

friction

d)

gravity

3.

What is the rate of change of velocity of an object over time?

a)

Deceleration

b)

Inertia

c)

Acceleration

d)

Speed

4.

What is the speed of an object in a particular direction?

a)

Speed

b)

Acceleration

c)

Velocity

d)

Distance

5.

What is the acceleration of an object if its velocity is increasing?

a)

Negative

b)

Zero

c)

Positive

d)

Decreasing

6.

What is the acceleration of an object if its velocity is decreasing?

a)

Positive acceleration

b)

Constant acceleration

c)

Negative acceleration

d)

Zero acceleration

7.

What is the acceleration of an object if its velocity is constant?

a)

0 m/s^2

b)

2 m/s^2

c)

5 m/s^2

d)

9.8 m/s^2

8.

What is the force that keeps objects in circular motion?

a)

Tension force

b)

Centrifugal force

c)

Centripetal force

d)

Gravitational force

9.

What is the acceleration due to gravity on Earth?

a)

9.81 m/s^2

b)

6.5 m/s^2

c)

8.7 m/s^2

d)

10.2 m/s^2

10.

What is the formula to calculate acceleration?

a)

acceleration = (final velocity - initial velocity) / time

b)

acceleration = (final velocity * initial velocity) / time

c)

acceleration = (final velocity + initial velocity) / time

d)

acceleration = (final velocity - initial velocity) * time

11.

What is the formula to calculate velocity?

a)

velocity = (final position + initial position) * time

b)

velocity = (final position - initial position) * time

c)

velocity = (final position + initial position) / time

d)

velocity = (final position - initial position) / time

12.

What is the formula to calculate speed?

a)

Speed = Distance * Time

b)

Speed = Distance - Time

c)

Speed = Distance / Time

d)

Speed = Time / Distance

13.
A force that opposes the motion of objects that touch as they move past each other. 
a)
vector
b)
gravity
c)
friction 
14.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
15.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
16.

Which surface would have the least amount of friction?

a)

A road

b)

A carpet

c)

An ice skating rink

d)

Astro turff

17.

Which type of friction is shown in the picture?

a)

rolling

b)

static

c)

fluid

d)

sliding

18.

What can reduce friction?

a)

Adding more weight

b)

Making surfaces rougher

c)

Using a slippery material/surface

d)

Increasing the surface area

19.
A football player is pushing a heavy sled for workouts. What type of friction must he overcome in order to start the sled?
a)
Rolling Friction
b)
Static Friction
c)
Fluid Friction
d)
Sliding Friction?
20.

If a car accelerates from 0 to 60 km/h in 5 hours, what is its acceleration?

a)

12 km/h 2^2

b)

12 m/s 2^2

c)

3 km/h 2^2

d)

3 m/s 2^2

21.
A ball of clay is thrown at a wall at a velocity of 28.0 m/s.  After it hits the wall, it takes 0.020 s to stop.  What is the acceleration of the clay when it hits the wall?
a)
1400 m/s2
b)
-1400 m/s2
c)
0.56 m/s2
d)
-0.56 m/s2
22.

A roller coaster accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
23.
Acceleration is defined as the CHANGE in 
a)
time it takes for one place to move to another place. 
b)
velocity of an object.
c)
distance divided by the time interval 
d)
velocity divided by the time interval 
24.
Acceleration only takes place when things speed up. 
a)
True
b)
False
25.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
26.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car turning a curve at a constant speed
27.
The SI unit for acceleration is
a)
mph
b)
m/s
c)
m/s2
28.
A change in velocity over time is known as:
a)
acceleration
b)
constant speed
c)
average speed
d)
displacement
29.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
30.

A boat travels 12.0 m while it reduces its velocity from 9.5 m/s to 5.5 m/s. What is the magnitude of the boat’s acceleration if it takes 2 seconds to slow down?

a)
1.3 m/s2
b)

-2.0 m/s2

c)
3.0 m/s2
d)

-7.5 m/s2

31.
Which of the following is an example of acceleration?
a)
A rollercoaster slows down as it travels uphill
b)
A cyclist travels 40 kilometers in 2 hours
c)
A flock of geese flies north at 55 mph 
d)
An athlete can run about 12.5 km/hr 
32.

An object accelerates from rest to a velocity of 20 m/s20 \, \text{m/s} in 4 s4 \, \text{s} . What is its acceleration?

a)

5 m/s25 \, \text{m/s}^2

b)

80 m/s280 \, \text{m/s}^2

c)

16 m/s216 \, \text{m/s}^2

d)

20 m/s220 \, \text{m/s}^2

33.

What is required for an object to begin moving from rest?

a)

A balanced force

b)

An unbalanced force

c)

No force

d)

A decrease in mass

34.

What unit is used to measure force?

a)

Joule

b)

Newton

c)

Pascal

d)

Watt

35.

What is acceleration due to gravity on Earth?

a)

98 m/s2

b)

9.8 m/s2

c)

0.98 m/s2

36.

What force is acting on the cat at the end?

a)

Gravity

b)

Friction

c)

Momentum

37.

Which of these dot diagrams represents a free falling object dropped from rest?

a)

A

b)

B

c)

C

d)

D

38.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
39.

Adam is driving his car for a distance of 500 km in 3 hr. What is his speed?

a)

1500 km/hr

b)

166.7 km/hr

c)

500 km/hr

d)

100 km/hr

40.

Kendra is walking home and her house is 200 m away. It takes her 20 seconds to get home. What was her speed?

a)

400 m/s

b)

200 m/s

c)

25 m/s

d)

10 m/s

41.

Abby is driving at a speed of 30 km/hr over a distance of 600 km. How long will it take her to go 600 km?

a)

300 hr

b)

20 hr

c)

15 hr

d)

90 hr

42.

Aaron is driving 70 km/hr for 3 hours. What distance did he cover?

a)

25 km

b)

210 km

c)

70 km

d)

1.5 km

43.

Mike is running at a pace of 8 m/s for 8 seconds. What distance did he cover in 8 seconds?

a)

64 m

b)

1 m

c)

8 m

d)

24 m

44.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

45.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
46.
Which of the following is a unit of time?
a)
sec
b)
mi
c)
m/s
d)
km
47.
Which of the following is a unit of distance ?
a)
miles/hr
b)
mi
c)
s
d)
min
48.
A train travels 25 km in .5 hrs. How fast is the train going?
a)
25 miles/hr
b)
5 miles/hr
c)
125 km/hr
d)
50 km/hr
49.

Using the graph provided, how long did it take the ball to roll 30 cm?  What was the average speed of the ball?

a)
35 seconds, 1.17 cm/s
b)
30 seconds, 1 cm/s
c)
30 seconds, 1.17 cm/s
d)
35 seconds, 1 cm/s
50.
Avery swims 1000 m in 30 minutes.  What is her average speed?
a)
33.33 m/min
b)
300 m/min
c)
30 m/min
d)
3 m/min
51.
A bus carrying Ava's friends to a soccer game traveled 10 km in 30 minutes. What was the average speed of the bus in km/hr?
a)
300 km/hr
b)
.33 km/hr
c)
20 km/hr
52.

What is the SI unit for length?

a)

seconds (s)

b)

meters (m)

c)

meters per second (m/s)

53.

How long would it take an object to travel 200 m at a speed of 50 m/s?

a)

10,000 s

b)

0.25 s

c)

4 s

54.
A box sliding down an inclined plane attains a velocity of 27 m/s in 3 seconds from rest.  Find the acceleration.
a)
30 m/s
b)
24 m/s2
c)
9 m/s2
d)
81 km/hr
55.
The picture of the position vs. time graph shows an object that is...
a)
accelerating/speeding up
b)
moving at a constant speed 
c)
not moving 
d)
accelerating/slowing down. 
56.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
57.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
58.
Which section of the graph shows acceleration?
a)
AB
b)
BC
c)

DE

d)
FG
59.

A car turns right without slowing down. Is this an example of acceleration?

a)

No, acceleration is the increase or decrease in speed.

b)

Yes, because the car changed directions.

c)

Yes, because the car increased it's speed.

d)

No, because the car did not change directions.

60.
What car has the fastest acceleration?
a)
Car goes from 0-60 Mph in 3 seconds
b)
Car goes from 0-60 Mph in 4 seconds
c)
Car goes from 0-60 Mph in 5 seconds
d)
Car goes from 0-60 Mph in 6 seconds
61.
A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?
a)
0 m/s
b)
40 m/s2
c)
-40 m/s2
d)
40 m/s
62.

Which graph shows an object at rest?

a)
b)
c)
d)
63.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
64.
Which runner won the race?
a)
A
b)
B
c)
C
65.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
66.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
67.

Jennifer stands on one side of a table and pushes with a force of 75 N towards Sam. If Sam wants to help Jennifer demonstrate balanced forces, what does he need to do?

a)

push with a force of 75 N toward Jennifer

b)

push with a force of 150 N toward Jennifer

c)

push with a force of 75 N in the same direction as Jennifer

d)

push with a force of 150 N in the same direction as Jennifer

68.

Which block has the greatest net force on it?

a)

Block 1

b)

Block 2

c)

Block 3

d)

Block 4

69.
What is the net force?
100 N        230 N
<------        --------->
a)
30 N to the right
b)
230 N to the right
c)
130 N to the right
d)
This is a balanced force
70.
Which of the following describes distance and displacement correctly?
a)
The blue arrow shows distance and the orange arrows show displacement
b)
The blue arrow shows displacement and the orange arrows show distance
c)
Both arrows show distance only
d)
Both arrows show distance and displacement
71.
Vectors are drawn as…
a)
A graph 
b)
A sketch 
c)
An arrow 
d)
Small as possible
72.

A vector is a quantity that has both _______ and _________.


Select all that apply.

a)

direction

b)

amplitude

c)

acceleration

d)

magnitude

e)

velocity

73.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
74.

What is the resultant force?

a)

17 N, Left

b)

6N, Right

c)

None of the above

d)

11N, Left

75.

What is the resultant force?

a)

40 N left

b)

0 N Balalnced

c)

400 N right

d)

40 N right

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