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WorksheetsUnit 3 Chapter 2 Test
Total questions: 46
Worksheet time: 43mins
Name
Class
Date
1.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
2.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
3.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
4.
If these boys are pulling with the same amount of force. What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
5.
What is the formula for force?
a)
F=M/A
b)
F=A/M
c)
F=M*A
d)
F=M*F
6.
What happens when two forces act in the same direction?
a)
They cancel each other out.
b)
The stronger one prevails.
c)
Their strengths are added.
d)
Their sum divided by the two is the total force.
7.
Any time the forces are unbalanced, an object will remain at rest. True or false?
a)
true
b)
false
8.
When you tell the direction and speed of an object, you give its
a)
motion
b)
velocity
c)
acceleration
d)
mass
9.
What is the net force on the block? (click on the words to view the picture)
a)
5 Newtons up
b)
5 Newtons down
c)
15 Newtons up
d)
15 Newtons down
10.
Which of the following statements is true?
a)
Balanced forces cause a change in motion.
b)
Unbalanced forces cause a change in motion.
c)
Forces do not effect the change in motion.
11.
If a 10 kilogram object accelerates suddenly at 15 m/s2, how much force was applied to the object?
a)
150 Newtons
b)
15 Newtons
c)
150 kilograms
d)
100 kilograms
12.
Which of the following objects has the least acceleration?
a)
a. an empty shopping cart pushed with a hard force
b)
b. a full shopping cart pushed with a hard force
c)
c. an empty shopping cart pushed with a light force
d)
d. a full shopping cart pushed with a light
force
13.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced
a)
12 N Right No
b)
4 N Left No
c)
12 N Right Yes
d)
4 N Left Yes
14.
Which of Newton's laws best explains why motorists should buckle-up?
a)
the first law
b)
the second law
c)
the third law
d)
the law of gravitation
15.
When you sit on a chair, the resultant force on you is
a)
zero
b)
up
c)
down
d)
depends on your weight
16.
In the absence of an external force, a moving object will
a)
stop immediately
b)
slow down and evdentually come to a stop
c)
go faster and faster
d)
move with constant velocity
17.
When the rocket engines on the NASA ship are suddenly turned off, while traveling in empty space, the starship will
a)
stop immediately
b)
slowly slow down, and then stop
c)
go faster and faster
d)
move with constant velocity
18.
A rocket moves through empty space in a straight line with constant speed. It is far from the gravitational effect of any star or planet. Under these conditions, the force that must be applied to the rocket in order to sustain its motion is
a)
equal to its weight
b)
equal to its mass
c)
depends on how fast it is moving
d)
zero
19.
You are standing in a moving bus, facing forward, and you suddenly fall forward. You can imply from this that the bus's
a)
velocity decreased
b)
velocity increased
c)
speed remained the same, but it's turning right
d)
speed remained the same, but it's turning left
20.
A constant net force acts on an object. Describe the motion of the object.
a)
constant acceleration
b)
constant speed
c)
constant velocity
d)
increasing acceleration
21.
If you blow up a balloon, and then release it, the balloon will fly away. This is an illustration of
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Galileo's Law of inertia
22.
Two cars collide head-on. At every moment during the collision, the magnitude of the force the first car exerts on the second is exactly equal to the magnitude of the force the second car exerts on the first. This is an example of
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's Law of Gravitation
23.
Action-reaction forces
a)
sometimes act on the same object
b)
always act on the same object
c)
may be at right angles
d)
always act on different objects
24.
Action-reaction forces are
a)
equal in magnitude and point in the same direction
b)
equal in magnitude but point in opposite directions
c)
unequal magnitude, point in same direction
d)
unequal magnitude. Point in opposite directions
25.
A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. Since a lot of damage is done on the car,
a)
force on the truck is greater than force on the car
b)
force on the truck is equal to force on the car
c)
force on the truck is smaller than force on the car
d)
the truck did not slow down during the collision
26.
A child's toy is suspended from the ceiling by means of a string. The Earth pulls downward on the toy with its weight force of 8.0 N. If this is the "action force," what is the "reaction force"?
a)
the string pulling up on the toy with 8N force
b)
the ceiling pulling up in the string with 8N force
c)
the string pulling down on the ceiling with 8N force
d)
the toy pulling up on the earth with 8N force
27.
In a game of tug-of-war, a rope is pulled by a force of 75 N to the left and by a force of 102 N to the right. What is the magnitude and direction of the net horizontal force on the rope?
a)
27N to the right
b)
27N to the left
c)
177N to the right
d)
177N to the left
28.
What is the natural tendency of an object that is in motion?
a)
To sit still
b)
to stay in motion
c)
to slow down
d)
to speed up
29.
There are six books in a stack, and each book weighs 5 N. The coefficient of friction between the books is 0.2. With what horizontal force must one push to start sliding the top five books off the bottom one?
a)
30N
b)
18N
c)
12N
d)
5N
30.
An airplane with a mass of 12,000 kg tows a glider with a mass of 600 kg. If the airplane propellers provide a net forward thrust of 36,000 N, what is the acceleration of the glider?
a)
285 m/s/s
b)
28.5 m/s/s
c)
2.85 m/s/s
d)
2850 m/s/s
31.
A wagon with a weight of 300.0 N is accelerated across a level surface at 0.5 m/s2. What net force acts on the wagon? (g = 9.81 m/s2)
a)
10N
b)
15N
c)
150N
d)
300N
32.
When you type on the keys of your Chromebook you are using a
a)
pull
b)
push
c)
gravity
d)
friction
33.
_____ is the force that slows and stops motion between touching objects.
a)
Friction
b)
Gravity
c)
Pull
d)
Push
34.
Who is the best science teacher?
a)
Mrs. Jordan
b)
Mr. Young
c)
Mr. Masters
d)
Mr. Coughlin
35.
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
36.
Why is there less friction between two ice cubes touching than between sandpaper on wood?
a)
They have rough surfaces.
b)
They have loud surfaces.
c)
They have smooth surfaces.
d)
They have bright surfaces.
37.
What is one way to reduce friction?
a)
Put sandpaper between the surfaces that touch.
b)
Push the surfaces closer together.
c)
Shine a light on the surfaces.
d)
Put a slippery substance between the surfaces.
38.
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.
39.
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
40.
What keeps the Moon in orbit around Earth?
a)
Earth's rotation.
b)
Earth's atmosphere.
c)
Earth's gravity.
d)
Earth's shape.
41.
When mass increases then gravity
a)
Decreases
b)
Increases
c)
Stays the same
42.
What type of force?
a)
Magnetic
b)
Gravitational
c)
Applied
d)
Normal
43.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
44.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact?
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
45.
Which force is shown?
a)
Balanced
b)
Unbalanced
c)
Gravity
d)
Friction
46.
9.8 N/kg is the gravitational strength of which planet _________________?
a)
Mars
b)
Venus
c)
Mercury
d)
Earth
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