What term refers only to the rate of motion?
Speed
What term relates time to another measurement?
Rate
If an object has negative velocity, what does that mean?
It is moving in the opposite direction of an object with positive velocity
What term refers to the rate of motion along with the direction of motion?
Velocity
What term refers to the change of speed over time?
(Bonus, how about the change of that unit over time, or of the change of the next unit, and so on?)
Acceleration
Bonus:
Jerk (Acc/time)
Snap (Jerk/time)
Crackle (Snap/time)
Pop (Crackle/time)
What is the definition of instantaneous speed?
The velocity of an object at any given moment
(Speedometer reading)
Name some units of acceleration.
Mph/s
M/s²
Km/hr/s
Any unit of distance divided by two units of time will work
What unit of acceleration is most commonly used in physics?
What is a vector?
A quantity measuring direction and amplitude of the unit measured
Vertical and horizontal motions are what?
How is inertia measured?
In mass (g, kg, etc.)
How is force measured?
In newtons (N, or kg * m/s²)
What is Newton’s First Law of Motion?
An object at rest tends to stay at rest; an object in motion tends to stay in motion
Or simply:
There is no acceleration without force
What is Newton’s Second Law of Motion?
An object’s acceleration is directly proportional to the net force placed on it and inversely proporitonal to the inertia (mass) of the object
a=F/m
What is Newton’s Third Law of Motion?
For every action the is an equal and opposite reaction
Or less simply:
For every cause and effect there is a secondary cause and secondary effect
What force does not rely on magnetic interactions of atoms in close proximity?
Gravity
What does the variable g stand for?
Acceleration due to gravity
What characteristic of an object is the force of gravity proportional to?
Mass
What does μ stand for?
The coefficient of friction between two objects (ratio of frictional force to normal force)
Which two forces are proportional to speed squared?
Air resistance and centripetal force
Momentum is directly proportional to what?
Which of Newton's laws can be rewritten from the perspective of momentum change?
Second law
What is impulse?
Force multiplied by time
The conservation of energy also applies to what?
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