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Motion & Force Review

Total questions: 80

Worksheet time: 1hrs 25mins

Name
Class
Date
1.

Are forces balanced or unbalanced when a car is moving at a constant speed in a straight line?

a)

Balanced

b)

Unbalanced

2.

Are forces balanced or unbalanced when a marble rolls down a ramp?

a)

Balanced

b)

Unbalanced

3.

A girl is pushing a cart by herself with a force of 7 N. What will happen if a boy begins to help her and their combined force is 17 N?

a)

The cart will speed up

b)

The cart will move at a constant speed in a straight line

c)

The cart will slow down

d)

The cart will fly to never land!

4.

Are forces balanced or unbalanced when a plane is moving at a constant speed in a straight line?

a)

Balanced

b)

Unbalanced

5.

Are forces balanced or unbalanced when an ice skater is moving at a constant speed in a straight line?

a)

Balanced

b)

Unbalanced

6.

The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 3 m/s?

a)

The boat will speed up

b)

The boat will move backwards

c)

The boat will slow down

d)

The boat will continue sailing to the left at 4 m/s

7.

The boat moves to the left at a speed of 4 m/s. The current moves to the right at 2 m/s. What will happen if the current increases to 5 m/s?

a)

The boat will increase speed and continue moving left

b)

The boat will move backwards

c)

The boat will sink

d)

The boat will continue sailing to the left at 4 m/s

8.

Are the forces acting on the rope balanced or unbalanced?

a)

Balanced

b)

Unbalanced

9.

At A the speed of the ball increases. At B, speed decreases. At C, speed is constant. Which points does the ball experience unbalanced forces?

a)

A and B

b)

B and C

c)

A and C

d)

A, B and C

10.

A ___ is a push or pull

a)

force

b)

gravity

c)

friction

d)

speed

11.

Acceleration occurs when an object changes its speed or ______.

a)

direction

b)

inertia

c)

force

d)

mass

12.

A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?

a)

50 miles

b)

100 miles

c)

25 miles

d)

75 miles

13.

Acceleration: is the rate of change in ___________.

a)

velocity

b)

speed

c)

distance

d)

displacement

14.

What is the definition of velocity?

a)

A force that opposes motion

b)

The speed of an object in a particular direction

c)

Uniform circular motion

d)

The amount of distance in a certain amount of time

15.

What is the definition of speed?

a)

Distance/Time

b)

A change in momentum

c)

A change in velocity

d)

Velocity/Time

16.

Velocity

a)

Vector

b)

Scalar

17.

Speed

a)

Vector

b)

Scalar

18.

Force

a)

Vector

b)

Scalar

19.

Mass

a)

Vector

b)

Scalar

20.

17 m/s East

a)

Vector

b)

Scalar

21.

Two vectors that have the same magnitude and direction

a)

True

b)

False

22.

The name for this type of diagram is...

a)

Free Body Force Diagram

b)

Box Diagram

c)

Free Box Diagram

d)

Stem and Leaf Diagram

23.

Calculate the net force for the diagram.

a)

800 N down unbalanced

b)

400 N down unbalanced

c)

600 N down balanced

d)

400 N down balanced

24.

Name the missing force...

a)

Normal Force

b)

Applied Force

c)

Friction Force

d)

Tension Force

25.

Use the picture as reference. If the force of the girl pushing is 30N, and the force of the boy who is also pushing is 30N, what is the net force?

a)

0 N

b)

900 N

c)

60 N

d)

1 N

26.

Name the missing force...

a)

Normal Force

b)

Friction Force

c)

Thrust

d)

Drag

27.

Based on the free-body diagram, which statement is true?

a)

The object is moving to the left

b)

The object is accelerating to the left

c)

The object is accelerating to the right

d)

The object is moving to the right

28.

The hockey puck is moving at a constant velocity across the ice. What forces does the puck experience at this moment?

a)

None

b)

Gravity and Normal

c)

Gravity, Normal, Friction, and Applied

d)

Gravity

29.

What is a closed path for electrons to flow through?

a)

static electricity

b)

circuit

c)

current

30.

What type of circuit is pictured?

a)

series

b)

parallel

31.

What would happen if in a circuit the voltage is increase?

a)

The time would increase

b)

The current would decrease

c)

The current would increase

d)

The current would stay the same

32.

When an object gains electrons it becomes __________

a)

Negative

b)

Neutral

c)

Positive

33.

What happens when two north poles of a magnet are placed together?

a)

they repel

b)

they attract

c)

they cancel each other out

d)

the strength of th magnet is doubled

34.

The area of magnetic force around a magnet is known as its _____________.

a)

magnetic field

b)

magnetic declination

c)

magnetic lines

d)

magnetism

35.

True or False: A magnet is attracting when it pushes objects away from each other.

a)

True

b)

False

36.

The ability to make things move or change

a)

Transfer

b)

Energy

c)

Repel

d)

Convert

37.

Which electromagnet is stronger?

a)

A

b)

B

38.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
d)
excited, hair, apple
39.
How do electromagnets differ from regular magnets? 
a)
A. They  can be turned off and on 
b)
B. Their polarity can be reversed
c)
C. Their strength can be changed
d)
D. All of the above
40.
A compass needle responds to a magnetic field, because the compass needle is a
a)
A. generator.
b)
B. motor.   
c)
C. magnet.
d)
D. transformer.
41.
As the resistance in a circuit increases, the electric current __________.
a)
increases
b)
decreases
c)
stays the same
42.
Electricity is the flow of _________.
a)
protons
b)
neutrons
c)
electrons
43.

is the opposition to the flow of charges in a material.

a)

Resistance

b)

Voltage

c)

Time

d)

Current

44.

What needs to be done to this circuit so that the lamp lights up?

a)

Close the switch

b)

Add a source and close the switch

c)

Add another lamp

d)

Add another lamp and a switch

45.

If lamp 2 is unscrewed from its holder, what will happen to lamp1?

a)

It will stay lit

b)

It will go out

c)

It will get dimmer

d)

It will dissapear

46.
this circuit is .....?
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
47.
An object becomes charged when the atoms in the object gain or lose
a)
electrons
b)
protons
c)
neutrons
d)
all of the above
48.
If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged by
a)
friction.
b)
convection.
c)
induction.
d)
conduction.
49.
Objects that have opposite charges
a)
are attracted to each other, and the force between the objects pulls them together.
b)
are attracted to each other, and the force between the objects pushes them apart.
c)
are repelled by each other, and the force between the objects pulls them together.
d)
are repelled by each other, and the force between the objects pushes them apart.  
50.
Charging by ____ occurs when electrons are transferred from one object to another by direct contact.
a)
reduction
b)
induction
c)
conduction
d)
friction
51.
A truck driving at 60 miles per hour travels 150 miles. How long is it driving for?
a)
9000 hours
b)
0.4 hours
c)
210 hours
d)
2.5 hours
52.
The SI unit for acceleration is
a)
mph
b)
m/s
c)
m/s2
53.
When objects remain in the same place, it is called...
a)
gravity
b)
friction
c)
balanced force
d)
unbalanced force
54.
Force is measured in....
a)
Galileos 
b)
Newtons
c)
Di Vincis
d)
Einsteins 
55.
An unbalanced force is when objects move in one direction because the force is greater from that direction.
a)
true
b)
false
56.
What is a force that works AGAINST MOTION?
a)
Force
b)
Motion
c)
Gravity
d)
Friction
57.

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

58.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
59.

Speed -

a)

A measure that gives rate of change and position

b)

A measure that dissolves to one unit

c)

A measure of distance an object travels per unit of time.

d)

A measure of distance an object travels per unit of measurement.

60.

What is the speed of a bus that travels 250 km in 2 hours?

Formula ?

Answer ?

a)

S= D/T

125km/hr

b)

S= T/D

521km/meters

c)

S=D/T Km/hr

d)

All fo the above

61.
Reese can run 10 meters in 5 seconds. What is her speed?
a)
5 meters/sec
b)
2 meters/sec
c)
5 miles/hour
d)
2 miles/hour
62.
Calculate these 3 car's speeds, then rank them in order of fastest to slowest, with 3 being the fastest car and 1 the slowest car.
Car A- distance: 4 meters, time: 2 sec
Car B- distance: 2 meters, time: 2 sec
Car C- distance: 8 meters, time: 2 sec
a)
Car A= 1
Car B= 2
Car C = 3
b)
Car A = 2
Car B= 1
Car C= 3
c)
Car A= 3
Car B= 1
Car C = 2
d)
Car A = 3
Car B= 2
Car C= 1
63.

A car travels 240 km in 2 hours and a sprinter travels 100 m in 9.5 sec. Who is traveling faster?

a)

the car

b)

the sprinter

c)

they are traveling the same speed

d)

not enough information to answer this question

64.
What two measurements are necessary for calculating speed?
a)
Mass and time
b)
Temperature and mass
c)
Mass and distance
d)
Distance and time
65.
65 miles per hour North is an example of an objects what?
a)
Speed
b)
Velocity
c)
Average Speed
d)
Constant Speed
66.
Ms. Bush drives 50 miles. What does Ms. Bush need to figure out her speed?
a)
The type of car she drives
b)
Her heart rate as she drives
c)
The time she has driven
d)
The direction she was going
67.

An old lady rolls down a hill at 3 meters/second. The hill is 36 meters long. How many seconds does it take the old lady to reach the bottom of the hill?

a)

39 seconds

b)

12 seconds

c)

15 seconds

d)

33 seconds

68.
A golf ball accelerates off a tee at 15m/s2, changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?
a)
750 seconds
b)
35 seconds
c)
0.3 seconds
d)
3.3 seconds
69.
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
70.
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
71.
Why does a car accelerate as it round a corner at a constant speed?
a)
Its direction changes
b)
It doesn't
c)
It slows down
d)
Its speeds up  
72.
Acceleration only takes place when things speed up. 
a)
True
b)
False
73.

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

a)
b)
c)
d)
74.

A rightward force is applied to a dresser to accelerate it to the right across the bedroom floor.

a)
b)
c)
d)
75.

A hockey puck glides to the right across the ice at a constant speed.

a)
b)
c)
d)
76.

A downward-moving skydiver who has just opened the parachute is slowing down.

a)
b)
c)
d)
77.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

normal

b)

abnormal

c)

static

d)

inertia

78.

This diagram can be used to indicate which of the following? (TWO correct answers)

a)

a object at rest

b)

an object moving at a constant velocity (speed)

c)

an object accelerating

d)

(Trick question -- there is only one correct answer)

e)

an object decelerating

79.

In a force diagram the size/length of the arrow tells you this about the force:

a)

the strength of the force

b)

the distance of the force

c)

the direction of the force

80.

Which way is the object moving?

a)

it's either not moving or moving at a constant speed due to balanced forces

b)

to the right

c)

to the bottom

d)

up

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