AP Physics 1 Set 2

displacement

an object’s change in position. It’s the vector that points from the object’s initial position to its final position

total distance

takes into account the total path taken (meaning if an object went backward and then forward, those distances are included in the total distance)

average speed

ratio of the total distance traveled to the time required to over that distance. total distance/time

velocity

the single concept that embodies both speed and direction, the definition of the average is: displacement/time

speed

the magnitude of the velocity vector and is expressed in units of meters per second (m/s)

acceleration

measures the rate of change of an object’s velocity: change in velocity/time

uniform accelerated motion

the simplest type of motion to analyze is motion in which the acceleration is constant

projectile motion

uniform accelerated motion where the acceleration is solely due to the force of gravity. It’s occurs when an object is moving through the air. The acceleration will always be g = 9.8 m/s² downwards

launch angle

the angle of an object’s initial velocity, measured from the horizontal, as it begins projectile motion

range

the full horizontal displacement of a projectile