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Forces Review Flashcards | StudBud
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Forces Review
Forces Review
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1
What is Newton's First Law of Motion?
Force = mass x acceleration
For every action there is an equal and opposite reaction
An object in motion stays in motion unless acted on by a force
Gravity
2
What is the force made by a rope called?
Whiplash
Tension
Cord Force
Stress
3
What is the definition of force?
Something that doesn't make things move
A push or pull
Light
A magnet
4
A train is 500,000 kg, and accelerates at 0.1 m/s
2
. What force does it create?
1,000,000 N
5,000,000 N
50,000 N
10,000 N
5
What is the normal force?
The force that pulls objects with mass towards each other
The force that a person or thing makes
The force that pushes solid objects apart when they are touching
The force that stops objects from sliding past each other
6
What units do we measure acceleration with?
Newtons
m/s
m/s2
Kilograms
7
What is gravity?
The force that a person or thing makes
The force that pushes solid objects apart when they are touching
The force that stops objects from sliding past each other
The force that pulls objects with mass towards each other
8
Which letter below is Mu?
μ
Ξ
Ω
ζ
9
What is inertia?
Moving fast
IDK
The idea that things don't want to change their motion
Force
10
Which of the following materials would probably have the most friction?
Plastic
Rubber
Metal
Wood (after being sanded)
11
What is the friction force between two objects if the normal force is 70N and the coefficient of friction is 0.1?
17N
100N
10N
7N
12
What is Newton's Third Law of Motion?
Force = mass x acceleration
An object in motion stays in motion unless acted on by a force
Gravity
For every action there is an equal and opposite reaction
13
What is applied force?
The force that stops objects from sliding past each other
The force that pulls objects with mass towards each other
The force that a person or thing makes
The force that pushes solid objects apart when they are touching
14
Why are astronauts on the space station "weightless"?
Because there is no gravity in space
Because they are in free fall, which makes you weightless
Because there is still some gravity, but very little
Space isn't real, it's all a hoax put on by NASA
15
A person creates a force of 45 N, and their mass is 15 kg. What is their acceleration?
3 m/s2
675 m/s2
0.33 m/s2
9.8 m/s2
16
Who discovered three laws of motion?
J. Robert Oppenheimer
Mr. Hanson
Albert Einstein
Isaac Newton
17
If you drop a feather and a bowling ball in a vacuum, which falls faster?
Bowling Ball
Impossible to know without actually conducting the experiment
Feather
They fall at the same rate
18
What does Mu represent in physics?
Acceleration of Gravity
The Friction Force
Normal Force
Coefficient of Friction
19
What does friction do to motion?
Depends on how much friction there is
Doesn't affect it
Speeds it up
Slows it down
20
What units do we measure mass with?
Newtons
m/s2
Kilograms
m/s
21
What type of friction is stronger?
Static friction
Quantum Friction
Kinetic Friction
Slow Friction
22
What is Newton's Second Law of Motion?
For every action there is an equal and opposite reaction
Force = mass x acceleration
Gravity
An object in motion stays in motion unless acted on by a force
23
What units do we measure forces with?
Newtons
Kilograms
m/s2
m/s
24
What is friction?
The force that stops objects from sliding past each other
The force that a person or thing makes
The force that pushes solid objects apart when they are touching
The force that pulls objects with mass towards each other
25
Which of Newton's Laws is also called the Law of Inertia?
The First Law
The Second Law
The Third Law
The Fourth Law
