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Newton's Laws - Review Flashcards | StudBud
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Newton's Laws - Review
Newton's Laws - Review
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Quick review of EAC "How do we get there"
Flashcards
24 cards
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Questions
24
Answers
1
The units of acceleration
meters per second
kilogram metres per second
Newtons
metres per second per second
2
Which of Newton's laws is represented by F=ma?
Newtons 2nd Law
Newtons 3rd Law
Inertia
Newtons 1st Law
3
The amount of material that an object is made up of. Also the measurement of inertia.
weight
density
mass
volume
4
What is the weight of a 50 kg person.
50 kg
approximately 500 kg
50 N
approximately 500 N
5
What forces act on a water rocket after it empties out but before maximum height?
Zero net force
Thrust, wind, gravity, friction
Thrust, wind, friction
Wind, gravity, friction
6
The resistance of an object to any change in its state of motion is called
weight
a reaction force
inertia
Newton's 3rd Law
7
Newtons 2nd Law - Force is _________ acceleration.
independent of
directly proportional to
engaged to
inversely proportional to
8
Which Newton's law tells us that changes in motion are caused by forces?
Equilibrium
Newtons 2nd Law
Newtons 1st law
Newtons 3rd law
9
The bat applies a force to the ball. What is the reaction force?
The force of the ball on the bat.
The roar of the crowd
The force of the wind on the bat.
The force of the bat on the hands
10
Which is not a vector quantity?
Acceleration
Force
Displacement
Speed
11
Which has more mass, 1 Kg of tennis balls or 1Kg of Rocks.
The feathers
The rocks
Neither - both have the same mass.
The tennis balls
12
Which of Newton's Laws is called the law of inertia?
Newtons 3rd Law
Newtons 2nd Law
Newtons 4th Law
Newtons 1st law
13
The force that acts to resist motion or attempted motion (often ignored in physics problems)
Friction
Inertia
Mass
Equilibrium
14
What is the name of the force that an object exerts on a supporting surface (Hint: mg)
Tension
Weight
Friction
Normal
15
An object at rest remains at rest. An object in motion remains in motion....
Unless acted on by unbalanced forces
Unless acted on by balanced forces
If net forces are greater than zero
Until all forces are removed
16
The rate of change of velocity is also called
time
displacement
acceleration
force
17
If forces are always in equal, opposite pairs how can a change in motion be possible?
The forces are almost but not exactly the same magnitude
Newton must be wrong
Force pairs don't necessarily act on the same object
Magic
18
Why did the plates on the table barely move when the table cloth was quickly pulled?
All answers are correct especially inertia.
The plates have mass in kilograms
The plates have resistance to changes in motion.
The plates have inertia
19
What are the units of force?
Newton
Kilogram
Jedi
Kilogram meter per second per second
20
How much force do rockets need to produce in deep space (zero gravity) to keep constant speed?
It depends
A tiny amount of force
A large amount of force
No force
21
Newtons 2nd law - If mass is constant and the force on the object triples, then acceleration..
is divided by 3
is unchanged
is multiplied by 3
is zero
22
In physics, net force is
The combination of all the forces that act on an object
What stops falling trapeze artists from hitting the ground
A scalar quantity
Always equal to zero
23
Which Newton's law deals with force pairs (action and reaction)?
Newton's 1st law
Newton's 3rd Law
Newton's 2nd law
Newton's 4th law
24
A cat and a mouse move at the same speed. Which has the greatest force?
The mouse
They both have the same force
The question doesn't make sense
The cat
