WorksheetsPSc 1.2 Forces Review
Total questions: 20
Worksheet time: 21mins
Name
Class
Date
1.
When the forces on an object have a net force of zero ( the object is still or going constant speed).
a)
Balanced force
b)
Unbalanced force
2.
Find the net force: 15 N pushing on an object to the right, and another 15 newtons pulling to the right.
a)
0 N Right
b)
0 N Left
c)
30 N Left
d)
30 N Right
3.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
4.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion.
d)
Friction
5.
An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50 newtons. Calculate the acceleration of the object.
a)
-8.1
b)
-.666
c)
-11.5
d)
-.83
6.
A student weighing 600 N stands on a spring scale in an elevator.
If the scale reads 800 N, the elevator must be
a)
moving downward at constant speed
b)
accelerating upward
c)
accelerating downward
d)
moving upward at constant speed
7.
True or false: You can't exert a force on anything unless it also exerts a force on you.
a)
True
b)
False
8.
When Ronda Rousey got kicked in the face, What is the interaction pair?
a)
The foot and the face
b)
Ronda Rousey and media criticism
c)
The foot and the air flow
d)
Ronda Rousey and the floor
9.
Momentum can be transferred from one object to another?
a)
True
b)
False
10.
Which of the following best describes the direction of the force of friction being applied to the wooden block by the horizontal surface?
a)
to the left
b)
to the right
c)
downward
d)
towards the french fries
11.
A force that opposes motion between a surface in contact with the atmosphere.
a)
air resistance
b)
gravity
c)
momentum
d)
terminal velocity
12.
The tendency of an object to resist changes in its motion is...
a)
inertia
b)
force
c)
acceleration
d)
velocity
13.
A cannonball with a mass of 10 kg is flying at an acceleration of 5 m/sec/sec. What is it's force?
a)
50 Newtons
b)
5 Newtons
c)
20 Newtons
d)
9.5 Newtons
14.
When you step on a Lego. You push on the Lego and the Lego pushes back on you.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
15.
This person bought coffee and put it on the seat next to them. If they stopped quickly and the coffee spilled which law would that represent?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
16.
Which one is balanced?
a)
top
b)
bottom
c)
both
17.
What is the difference between mass and weight?
a)
mass is how much matter is in an object, and weight is the gravitational pull on that object
b)
mass and weight are the same
c)
weight affects how much mass is in an object
d)
weight is determined by how many atoms make up an object
18.
Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's Law of Biology
19.
The SI units for force are...
a)
Kilograms
b)
Newtons
c)
Meters per second
d)
Pounds
20.
Which law best demonstrates this picture?
a)
1st
b)
2nd
c)
3rd
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