Straight line motion in which equal displacements occur during any successive equal time intervals
a point where the velocity is instantaneously zero as the particle reverses direction
Uniformly accelerated motion
motion that has acceleration that is constant and unchanging. V(t) is a straight line and the slope is as
When an object is moving under the influence of gravity only
A quantity having both size and direction
Length or size of a vector (magnitude is a scalar quantity)
Sum of two vectors
Vectors of magnitude 1 parallel to the x,y, or z axes.
Acceleration that always points towards the center of a circle
an object that moves in two dimensions under the influence of only gravity.
the angle of the initial velocity above the horizontal reference point (usually x-axis)
A coordinate system in which an experimenter makes position and time measurements of physical events. Separate individuals have their own reference frames
Inertial Reference Frames
Reference Frames that move with constant speed and in a straight line
Galilean Transformation of Position
If we know where and when an event occurred in one reference frame, we can transform that position into any other reference frame that moves relative to the first with constant velocity V. (x=x'+Vxt OR x'=x--Vxt)
Uniform Circular Motion
A particle that moves at constant speed around a circle of radius r. Occurs only if angular velocity ωω is constant and unchanging
Period of Motion
Time interval required for the particle to go around the circle once, completing one revolution.
Used along with r to describe position of a particle in circular motion, represents the angle from the positive x-axis.
arc length (s)
Distance around the circle the particle travels of radius R
Arc length / radius or S/r
The change in a particles angle over a specific time interval
derivative of Angular Velocity/Time IntervalDenoted--ω
nonuniform circular motion
Circular motion with a changing speed
Acceleration vector that is parallel with velocity vector and always tangent to the circle
Acceleration vector that points towards the center of the circle
Nonuniform circular Acceleration
Does not point towards the center of the circle, points ahead if particle is speeding up, and behind if it is slowing down.
the rate at with the angular velocity ω changes. denoted-αIt equals the derivative of ω.
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