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Newton's Laws
Newton's Laws
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Academic HS Physics over Newton's Laws
Flashcards
15 cards
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Questions
15
Answers
1
What force opposes motion of an object across a surface?
Normal
Friction
Applied
Tension
2
How many days until Christmas?
46
39
51
41
3
Which of Neton's Laws deal with action/reaction?
1st
2nd
4th
3rd
4
In a free body diagram, the force arrows always point __________.
at right angle toward each other
toward the object
away from the object
both toward and away from any object
5
The normal force (F
N
) refers to
perpendicular tension exerted by a surface on a rope
parallel force exerted by surface of another object
perpendicular force exerted by surface on another object
parallel acceleration of a body at terminal velocity
6
What is the force of a free falling object with a mass of 25 kg?
250 N
0.392 N
245 N
2.55 N
7
The force of gravity on an object is also known as _________.
Mass
Weight
Normal
Inertia
8
1 Newton is equal to _____________.
1 lb
1 kg
1 (kg x m)/s2
9.8 m/s2
9
The force of gravity is an example of __________.
Blunt force
Contact force
Regional force
Field Force
10
If an action force is a cue ball (white) hitting a billiard ball, the reaction force is ______.
exerted by billiard ball on cur ball
exerted on table
exerted on all other billiards
not present
11
What is the standard unit of force?
kilogram
Newton
m/s2
meter
12
When an object is in equilibrium, the net force is _________.
negative
zero
changing constantly
positive
13
Tension refers to _________.
terminal velocity
dynamic displacement
force exerted by a string
free fall
14
Devices such as seatbelts and airbags are used to protect passengers from which law?
Law of Inertia
Law of the jungle
Law of Gravity
Law of Conservation of Mass
15
Unbalanced forces cause _______.
momentum
friction
acceleration
velocity
