WorksheetsG8 U6 Motion and Forces
Total questions: 50
Worksheet time: 35mins
Name
Class
Date
1.
An object at rest will stay at rest. An object in motion will stay in motion until a force makes it change its motion.
a)
Newton's Second Law
b)
Newton's Third Law
c)
Newton's First Law
2.
When an object is not moving a ______________ force is acting on it.
a)
Balanced
b)
Unbalanced
3.
The average speed of a car that travelled 80 miles in 4 hours would be....
a)
40 mph
b)
10 mph
c)
20 mph
4.
When something has speed in a certain direction it is called ___________.
a)
motion
b)
position
c)
velocity
d)
speed
5.
Acceleration of an object happens when things ________
a)
slow up
b)
go faster
c)
change direction (turn)
d)
All of the above
6.
For every action force there is an equal and opposite reaction force. This is Newton's ___________ of motion.
a)
2nd Law
b)
4th Law
c)
3rd Law
7.
In order to for something to start moving a(n) _______________ force is needed.
a)
balanced
b)
rebalanced
c)
unbalanced
8.
The more massive something is the more force is needed to move it is part of Newton's ___________ of motion.
a)
1st Law
b)
2nd Law
c)
3rd Law
9.
The formula for figuring out average speed is....
a)
Distance + Time
b)
Distance divided by time
c)
Time multiplied by Distance
d)
Distance - Time
10.
40 miles per hour going south is a
a)
speed
b)
velocity
c)
acceleration
11.
A car turning onto a highway is an example of
a)
speed
b)
velocity
c)
acceleration
12.
Traveling a distance of 720 miles in 12 hours a person would have an average speed of.....
a)
70 miles an hour (mph)
b)
65 miles an hour (mph)
c)
55 miles an hour (mph)
d)
60 miles an hour (mph)
13.
One way to reduce friction is to
a)
make a smooth surface
b)
make a surface rough
14.
One way to make more friction between two objects is to
a)
Make the surface smoother
b)
Make the surface rougher
15.
You kicked a football...What force made it move?
a)
Friction
b)
Gravity
c)
Balanced force
d)
Unbalanced force
16.
If two teams have a tug-of-war and it ends in a tie, what forces are involved?
a)
Balanced forces
b)
Unbalanced forces
c)
Weight and gravity
d)
Friction and gravity
17.
What can change the motion of a moving object?
a)
Balanced force
b)
Unbalanced force
c)
Mass
d)
Weight
18.
Which observation BEST supports Newton's First Law of Motion (the law of inertia)?
a)
A ball will bounce more if it is thrown harder
b)
Friction is a force that changes speed and direction of motion
c)
Gravity is a force that pulls objects toward the Earth
d)
Something that is not moving will remain still unless an outside force acts on it
19.
Which observation BEST supports Newton's 2nd Law of Motion?
a)
It takes more force to move an elephant than it does to move a mouse
b)
An elephant will not move unless an outside force acts on it
c)
A mouse has less mass than an elephant
d)
Elephants are afraid of mice
20.
Which observation BEST supports Newton's 3rd Law of Motion?
a)
A ball will not move unless something pushes it
b)
A moving airplane will keep moving unless something stops it
c)
Force equals mass times acceleration
d)
The harder you throw a ball against a wall, the more it will bounce back
21.
The force of friction is caused by:
a)
surfaces rubbing against one another
b)
objects heating or cooling
c)
rough surfaces
d)
smooth surfaces
22.
LT4: The graph shows Ashley riding her bike to Maria's house.
What was occurring from point B to point C?
What was occurring from point B to point C?
a)
She was increasing her speed.
b)
She stopped for 4 minutes
c)
She was decreasing in speed
23.
On a distance vs. time graph, the steeper the slope _____
a)
the slower the speed
b)
the faster the speed
c)
less acceleration
d)
greater acceleration
24.
LT4: The graph shows Ashley riding her bike to Maria's house.
What is occurring from point A to point B?
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
25.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
26.
A speedometer shows a "snapshot" or "freeze frame" of a car's motion. This is called
a)
instantaneous speed.
b)
average speed.
c)
velocity.
d)
displacement.
27.
A proper quantity showing velocity would be
a)
25 m/s.
b)
30 m south.
c)
15 m/s north.
d)
10 m.
28.
How long did it take this object to travel 10 m?
a)
0 s
b)
10 s
c)
15 s
d)
20 s
29.
Speed is different from velocity because
a)
Velocity has a direction
b)
Speed uses Distance /Time
c)
Velocity doesn't include time
d)
Velocity doesn't include distance
30.
Acceleration: is the rate of change in ___________.
a)
speed
b)
distance
c)
velocity
d)
displacement
31.
Acceleration only takes place when things speed up.
a)
True
b)
False
32.
A quantity that has both magnitude and direction is called a scalar quantity.
a)
True
b)
False
33.
This graph shows
a)
An object speeding up
b)
An object slowing down
c)
An object stopped
d)
An object moving at constant speed
34.
This graph shows
a)
An object stopped
b)
An object slowing down
c)
An object speeding up
d)
An object moving at constant speed
35.
This graph shows
a)
An object speeding up
b)
An object slowing down
c)
An object stopped
d)
An object moving at constant velocity
36.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
37.
What is the SI unit for acceleration?
a)
m/s
b)
m
c)
m/s2
d)
s
38.
LT1 Which would NOT make a good reference point?
a)
Becker Middle School
b)
A chair
c)
A moving child
39.
Which is true from Newton's Third law of motion?
a)
For every action force there is a smaller reaction force in the opposite direction.
b)
For every action force there is an equivalent reaction force in the opposite direction.
c)
Both 1 and 2
d)
None of the above
40.
What is Newtons 2nd law?
a)
equal&opposite force
b)
law inertia
c)
f=ma
41.
How can you increase the acceleration of an object?
a)
decrease its mass
b)
increase its friction
c)
increase its mass
d)
decrease the force applied to it
42.
______ measures an object's tendency to resist changing its motion.
a)
Acceleration
b)
inertia
c)
Gravity
d)
weight
43.
It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes
a)
Newton's first law, the law of inertia
b)
Newton's second law, the law of acceleration
c)
Newton's third law, the law of action reaction
d)
The law of universal gravitation
44.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
45.
What is the net force
a)
10 N
b)
0 N
c)
25 N
d)
1 N
46.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
47.
Which best explains why we are able to accelerate forward when starting to run?
a)
As one leg moves backward, it provides an equal and opposite force for the other foot to move forward.
b)
No acceleration takes place. Runners are always at a fixed velocity.
c)
The striking foot pushes backward against the ground. The friction with the ground provides an equal and opposite force forward.
d)
The runner's upper body quickly leans forward, causing the entire body to begin accelerating forward
48.
If you are an astronaut slowly drifting away from the space station, you might be able to drift back to the station by throwing a 555-kg tool rapidly in the direction that you are traveling (away from the station).Please choose from one of the following options.
a)
True
b)
False
49.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
50.
If lil Wayne, who is an alien, weighs 578 Newtons on Earth and 96 Newtons on the moon, this means that his...
a)
mass is greater on earth.
b)
mass is greater on the moon.
c)
inertia is greater on earth and less on the moon.
d)
mass is the same on the moon and the earth.
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