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Newton Laws
Newton Laws
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Newtons Laws, Friction, Gravity, #science #physics #newtonslaws
Flashcards
29 cards
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Questions
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Answers
1
If an object is moving at a constant speed in straight line, no forces are acting on it
False
True
2
A seatbelt stops your _______ in a car crash
Inertia
Size
Weight
Gravity
3
For ever action there is an equal and opposite reaction force
Newtons 3rd Law
Gravity
Newtons 1st Law
Newtons 2nd Law
4
A feather will fall through the air more slowly than a brick because of _____.
Inertia
Gravity
Air Resistance
Mass
5
If a 500-N action force is exerted to the right, the reaction force will be _____.
500nN Left
250N Right
500N Right
250N Left
6
If I am in a car going 120 km/h, how fast am I moving in my seat?
0 km/h
120 km/h
Huh?
121 km/h
7
Which is an example of helpful friction?
Static electricity
Tires on the road
engine parts rubbing against each other
8
The forces in Newtons 3rd law are
a push and pull
Static and sliding friction
Action and reaction
Gravity and air resistance
9
A rocket pushes gas down to move up. Which of Newtons Laws is this?
2nd
1st
3rd
10
_____ is a force that opposes the motion of objects that move through the air.
Inertia
Gravity
Air resistance
Static Friction
11
What noise does a giraffe make
Moo
Bark
Silence
Baa
12
Force = Mass times Acceleration
Newtons 2nd Law
Newtons 3rd Law
Gravity
Newtons 1st Law
13
If I punch a wall, which has a greater force?
Neither
My hand
The wall
The same
14
The tendency of an object to not change its motion
Weight
Inertia
Mass
Force
15
The gravitational force exerted on an object is called the object’s _.
Inertia
Size
Weight
Mass
16
If the net force on a moving object is 0, then it will
Speed up
Change Direction
Remain Constant
Slow down
17
Your ________ would be different on the moon
Weight
Volume
Mass
Name
18
As an object falls faster, the force of air resistance _.
Decreases
Increases
Stays the Same
19
If a 50 kg box accelerates 10 m/s
2
, how much force acted on it
50N
5 N
60N
500N
20
Acceleration due to gravity on earth is
1m/s2
15.67m/s2
9.8m/s2
6.89m/s2
21
The sum of all the forces acting on an object is called
Gravity
Friction
Inertia
Net Force
22
The amount of gravitational force between objects depends on their _____.
Volume and DIstance Apart
Mass and Volume
Mass and Weight
Mass and Distance Apart
23
Equal Forces DO NOT have Equal _________
Effects
Amounts
Forces
Sizes
24
Which is a way to decrease friction
Increase the mass of the object
Push the objects together with more force
Make the surfaces smoother
25
An object at rest stays at rest until acted upon by a unbalanced force
Newtons 3rd Law
Newtons 1st Law
Gravity
Newtons 2nd Law
26
A baseball hurled by a powerful pitcher has greater ____________ than one lobbed gently.
Mass
Acceleration
Weight
Gravity
27
If 2.5 kg box get pushed with 50 N of force, how much will it accelerate
52.5 m/s2
125 m/s2
20 m/s2
47.5 m/s2
28
_____ is the force that opposes the motion of two surfaces that are touching each other.
A push or pull
Gravity
Friction
Inertia
29
The force of attraction between any two objects
Pull
Gravity
Inertia
Friction