Newton's Laws
Trig
Definitions
Misc
Definitions pt2
100
Newton's First law of motion
An object in motion will stay in motion and an object at rest will stay at rest unless acted on by another force.
100
What trig function can be used to find the angle pointed to by the green arrow if the hypotenuse and opposite length are known?
Sine
100
Perpendicular
90 degrees apart
100
What is the Pythagorean theorem?
A2+B2=C2
100
Equilibrium
1. a state in which opposing forces or influences are balanced
2. a state of physical balance.
200
Newton's Second Law of motion
F=ma
The acceleration of an object is dependent upon it's mass and the force applied to it.
200
What trig function can be used to find the angle pointed to by the green arrow if the hypotenuse and adjacent length are known?
Cosine
200
Component
A smaller piece of information is contained within a larger description. Vectors have components in the x, y, and z directions.
200
SohCahToa stands for what?
Sine equals Opposite over Hypotenuse
Cosine equals Adjacent over Hypotenuse
Tangent equals Opposite over Adjacent
200
Resultant
The vector you end up with after adding two or more vectors
300
Newton's Third law of motion
For every action there is an equal and opposite reaction.
300
What trig function can be used to find the angle pointed to by the green arrow if the opposite and adjacent lengths are known?
Tangent
300
Magnitude
the great size or extent of something
size
a numerical quantity or value.
300
What is the associative property?
Order of groupings does not matter
300
Line of action
An imaginary line that extends in both directions from a vector. This will be important to remember for moments!
400
Inertia is the application of which of Newton's laws?
The first law
400
What trig law is shown here?
Law of Sines
400
Sense
The general direction of a vector
400
What is the commutative property?
The order of addition does not matter
400
Vector vs Scalar
Vectors include magnitude and direction. Scalars include only magnitude.
500
Does the moon exert more force on the earth, or does the earth exert more force on the moon?
Trick question! Neither!
500
What trig law is shown here?
Law of cosines
500
Velocity vs Speed
Speed=distance/time
Velocty=displacement/time
500
Which version is the correct version of law of sines?
Trick question! They're both correct!
500
Unit vector
Vectors of magnitude 1 that are purely in the x, y, or z direction.