AP Physics - Unit 1 - Kinematics

motion is ____

relative

relative velocity

when two objects are going the same direction, subtract their speeds

when two objects are going opposite directions, add their speeds

vector quantities

• velocity

• displacement

• weight

• force

• acceleration

• momentum

scalar quantities

• distance

• speed

• mass

• time

• temperature

displacement

∆x = xf - xi

average velocity

v = ∆x / t

average speed

v = x / t

acceleration

a = ∆v / t

velocity = slope of _____ curve

position (x vs t)

acceleration = slope of _______ curve

velocity (v vs t)

a due to gravity =

9.81 m/s²

if a is negative, x vs. t is concave _____

down

if a is positive, x vs. t is concave ______

up

if a is constant, the v vs. t graph is a ________ line

straight

what force does free fall include?

gravity (neglecting air resistance)

_______ fall into this category when discussing 2d motion

projectiles

projectiles

any object thrown into space upon which the only acting force is gravity (ex. ball being thrown)

can you free fall even if you’re going upward?

yes