Vocabulary
an object's location within a certain time frame.
What is position?
Difference between speed and velocity
Speed: rate of change in object's distance (from some point)
Velocity: rate of change in object's position
when does velocity change
when an object is affected by acceleration
What is the slope of a position vs time graph
velocity
when is a projectile at its maximum height
when velocity in the y direction equals 0
its relative change in position in some reference to some origin. (Δx=x−x0)
What is the displacement of an object?
Difference between instantanious speed and average speed
instant: velocity measured at a certain point in time
Average: the velocity that was measured between a certain time frame.
how do you calculate velocity
dereivitive of position vs time or delta x/delta y
What is the area beneath an acceleration vs time graph (in a given period of time)
change in velocity
what is constant in the x direction of 2d kinematics problems
velocity (whatever v0 for the x direction was)
The rate at which the object's displacement changes over time
What is velocity?
Difference between displacement and distance
displacement: change in position
distance: length of the path covered by the object
during freefall (with drag), an object will reach this
terminal velocity
What is the maginitude of the y value value of a position vs time graph
distance from starting position
what is constant in the y direction of 2d kinematics problems
acceleration (g)
the rate at which the object's distance changes over time.
What is speed?
Difference between scalar and vector
vector: direction and magnitude
scalar: only magnitude
what are the units for velocity
distance over time (m/s or cm/year, etc.)
what is the area under the curve of a position vs time graph
Nothing! -- it doesn't mean anything!
45 degrees
What is the optimal angle to launch a projectile so that it goes the farthest distance possible
the rate at which the object's velocity changes over time.
What is acceleration?
whats the difference of final position and initial position
displacement
What determines the shape of a projectile's trajectory
initial velocity (v0)
What is the slope of an acceleration vs time graph
Jerk (not tested)
what does the trajectory of a projectile look like
parabola