Position, Displacement and Velocity ! ⭐

distance (x)

• units: meters

• how far do you travel

• does not care about your direction

• example: x = 5m

displacement (Δx or “d”)

• units: meters

• distance from where you started

• cares about your direction

• (average velocity) * (time)

• example: Δx = x2 - x1 = 7 - 5 = 2m

speed

• the rate at which an object covers a distance

• units: meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph)

• speed = distance/time

velocity

• how fast something is moving and the direction of travel

• units: meters per secong (m/s)

• avg. velocity = displacement / time

acceleration

• the change in velocity divided by the time it takes to make that change

• units: m/s²

• a = change of velocity / time