Physics Ch 2

1D Kinematics

kinematics vs. dynamics

kinematics (how objects move) vs. dynamics (force, why objects move as they do)

translational motion

movement without rotation

distance

how far an object has traveled from its start

displacement

how far an object is from its starting point

average speed formula

avg speed = (distance traveled)/(time elapsed)

average speed definition

the total distance traveled along a path divided by the time it takes to travel this distance

difference between speed and velocity

speed describes how fast an object is moving (or its magnitude), while velocity includes magnitude and direction and is a vector

average velocity formula

average velocity = displacement/time