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WorksheetsForces and Motion
Total questions: 51
Worksheet time: 54mins
Name
Class
Date
1.
One way that a force can cause the change in an object's motion is to...
a)
do nothing.
b)
eat ice cream.
c)
start the object moving.
d)
shine on the object.
2.
Another way that force can cause the change in an object's motion is to...
a)
change its color.
b)
change its pitch.
c)
change its direction.
d)
change its spots.
3.
_____ is the force that slows and stops motion between touching objects.
a)
Friction
b)
Gravity
c)
Pull
d)
Push
4.
Which has the least friction?
a)
snowboard on a snowy hill
b)
running on the playground
c)
sandpaper on wood
d)
a racer on a track
5.
How does friction help us move from place to place?
a)
Friction does not help us.
b)
Friction keeps us from slipping and sliding.
c)
Friction only helps cats.
d)
Friction makes us slip and fall.
6.
Why do air planes and race cars have sleek shapes?
a)
to reduce friction from air resistance
b)
to increase air resistance
c)
to look more appealing than cats
d)
so people will buy them
7.
What keeps the Moon in orbit around Earth?
a)
Earth's rotation.
b)
Earth's atmosphere.
c)
Earth's gravity.
d)
Earth's shape.
8.
Which would require the most force to move?
a)
a toy car
b)
a sleeping cat
c)
a science book
d)
a chair with a friend sitting in it
9.
Balanced forces can cause
a)
an object to speed up or slow down
b)
an object to stay still or move at a constant speed and direction
10.
Who is winning this race?
a)
A
b)
B
11.
What speed is the person with the red line going?
a)
20 km per hour
b)
10 km per hour
c)
50 km per hour
d)
30 km per hour
12.
When was the ostrich going at a constant speed?
a)
Between 0 and 30 min.
b)
Between 45 and 60 min.
c)
Between 30 and 45 min.
13.
this force is ___________ and there will be
a)
unbalanced, no movement
b)
balanced, movement to the left
c)
balanced, no movement
14.
If all four forces are balanced, the plane will
a)
plummet to the ground
b)
fly faster and faster
c)
fly slower and slower
d)
fly at a constant speed and direction
15.
If two spheres of different masses, but the same size are dropped at the same time
a)
they will hit the floor at the same time
b)
the larger mass will hit first
c)
the smaller mass will hit first
16.
The more massive an object is...
a)
the harder it will be to get moving.
b)
The harder it will be to stop.
c)
the harder it will be to speed up.
d)
all of the above.
17.
To measure speed, you need to know...
a)
distance covered and speed
b)
distance covered and time it took
c)
acceleration and distance
d)
direction and time
18.
to determine if something is moving or changing direction you need
a)
a calculator
b)
a tape measure
c)
a magnifying glass
d)
a non-moving background
19.
______ measures an object's tendency to resist changing its motion.
a)
Acceleration
b)
inertia
c)
Gravity
d)
weight
20.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
21.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
22.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
23.
What is air resistance?
a)
friction in the air that slows things down
b)
when an airplane flies into a cloud
c)
when you feel the air hitting your face
24.
Why do we need friction?
a)
It helps objects go faster.
b)
It helps objects go up higher.
c)
It helps make objects go slower or stop.
25.
What does a curved line on a distance-time graph show?
a)
That the speed is changing.
b)
That the object is not moving.
c)
That the object is constant.
26.
What is weight?
a)
The measure of how HEAVY something is.
b)
The measure of how much GRAVITY is pulling on an object.
c)
BOTH answers are correct.
d)
None of them.
27.
Is weight AFFECTED by gravity?
a)
YES, depending on the force of gravity is how much you weight.
b)
NO, it is not related.
28.
Where would you have more mass, on Earth or on the Moon?
a)
Earth
b)
Moon
c)
It is the same, mass doesn't change
d)
In both Planets.
29.
Newton's Third Law says that for every ______ there is an ________ and _________ reaction.
a)
action, equal, opposite
b)
push, pull, contact
c)
motion, unbalanced, equal
30.
This is the rate of change in velocity.
a)
Instaneous Speed
b)
Acceleration
c)
Average Speed
d)
Deceleration
31.
What is true about all forces?
a)
they are unbalanced
b)
they involve more than one object
c)
they cause objects to move
d)
they cancel each other out
32.
How does the sun's gravity compare to the earth's gravity?
a)
the sun's gravity is stronger
b)
the earth's gravity is stronger
c)
their gravitational pull is the same
d)
scientist's aren't able to measure the sun's gravity
33.
What is force?
a)
a type of energy
b)
an anchor
c)
a push or pull that causes an object to move, stop or change direction
d)
not here
34.
A type of force that is produced by a magnet is called ______.
a)
motion
b)
gravity
c)
friction
d)
magnetism
35.
______ is the amount of matter an object is made of.
a)
mass
b)
gravity
c)
speed
36.
The measure of the pull of gravity on an object is called ____.
a)
friction
b)
motion
c)
weight
37.
A boy sits halfway down a grassy slope. What force stops from him sliding down?
a)
Weight
b)
Gravity
c)
Friction
38.
What will put an object into motion?
a)
Forces
b)
Nothing
c)
Photosynthesis
d)
Oxygen
39.
If a 10 kilogram object accelerates suddenly at 15 m/s^2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
40.
If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?
a)
10 m/s^2
b)
.1 m/s^2
c)
100 m/s^2
d)
1 m/s^2
41.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
42.
The masses of four objects are given in this table. If all objects are struck with the same amount of force, which one will have the greatest acceleration?
a)
Object 1
b)
Object 2
c)
Object 3
d)
Object 4
43.
What is the formula for force?
a)
F=M/A
b)
F=A/M
c)
F=M*A
d)
F=M*F
44.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 3rd Law
c)
Newton's second law
45.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
46.
Name the missing force...
a)
applied force
b)
weight force
c)
lift
d)
normal force
47.
The gravitational force of any object near Earth's surface is ____.
a)
unknown
b)
friction
c)
Newton's first law
d)
9.8 m/s2
48.
What is the unit used to measure force?
a)
Pounds
b)
Grams
c)
Newtons
d)
kg/ m2
49.
Calculate the net force of the object in the image shown.
a)
20N
b)
35N
c)
5N
d)
25N
50.
Which direction will the object move?
a)
Up
b)
Down
c)
Right
d)
Left
51.
What is the unit for Work?
a)
A. Newton
b)
B. Joules
c)
C. meter
d)
D. gram
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