Kinematics

position

where an object is at any particular

displacement

the change in position

VECTOR

distance

the length of the path traveled

SCALAR

what does a large displacement in a small amount of time tell you about velocity?

you have a large velocity

average velocity

displacement (deltaX over time)

velocity unit

m/s

instantaneous velocity

the average velocity at a specific instance in time

speed

the rate of change in distance

SCALAR

velocity

change in position

VECTOR

acceleration

the rate of change of velocity

VECTOR

what does a greater acceleration tell us about velocity?

the greater the change in velocity over a given time

acceleration units

m/s2

what is acceleration when velocity is constant?

zero

when is velocity constant?

when average speed is constant

freefall

an object falling without air resistance or friciton

projectile motion

the motion of an object thrown or projected into the air, subject to only the acceleration of gravity