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## Ignore words

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Distance
a path taken and always a positive number
displacement
A change in position (delta p).
length
A measured distance
Velocity
a speed in a particular direction.
acceleration
(physics) a rate of change of velocity
time
A measure of change between two events or moments.
kinematics
branch of mechanics that explains the "what" and "how" of motion
constant speed
Moving at a steady rate over time
Average Speed
Distance traveled divided by the time required to cover the distance
Average Velocity
Dividing displacement by elapsed time
slope of a line
rise over run; measures how steep a line is; rate of change of a line
Instantaneous Velocity
How fast an object is moving and direction of motion at each instant in time
x-t graph
Position-time graph, whose slope indicates velocity.
v-t graph
Velocity-time graph, whose slope indicates acceleration and whose area indicates displacement
a-t graph
Acceleration-time graph, whose area indicates a change in velocity.
Average acceleration
a = ∆v/∆t
Instantaneous acceleration
Average acceleration as change in time approaches 0
free fall
a state in which an object is gravitationally drawn to the earth's surface and is unaffected by any forces besides weight
Displacement (units)
m with a direction.
Velocity (units)
m/s with a direction.
Acceleration (units)
m/s2 with a direction.
m
A car starts from rest and travels for 5.0 s with a constant acceleration of -1.5 m/s^2. How far does the car travel in this time interval? (units)
m/s
A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 3.2 km in 3.5 minutes. How fast (in m/s) is the car moving after this time? (units)
d
Displacement (variable)
v
The index of refraction n is defined as , where c is the speed of light in air, and _______ is the speed of light in a material.
s
arc
a
acceleration (m/s2)
inertia
_______ is the property of an object that leads it to resist any change in motion
force
(interactions between two objects)
net force
Acceleration depends on the
equilibrium
1)starting point of SHM, object is in _______, fnet equals zero
Vector quantity
9.8m/s per second is a
Speed
Units: cm/s, m/s, mi/hr, km/s ...
Scalar Quantity
a measure of magnitude
Physics is...
... the natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force.
gravity
(physics) the force of attraction between all masses in the universe
V=^x/^t
Average velocity (slope)
x=xo+vt
Linear equations (position at any time)