Introduction to motion graphs Measuring Quantities Scalar Vector

Introduction to motion graphs

Measuring Quantities Scalar Vector • _____________ (number only) • __________________________ • Examples • Distance (20 meters) • Speed (10 m/s) • Mass (30 kg) • Displacement (20 meters North) • Velocity (10 m/s Eastbound) • Force (20 N downward)

Distance vs Displacement Distance Displacement • “how much ground an object has covered“ • _________________________. • it is the object's overall change in position; • _________________________. • Used to calculate ______________ • Speed= change in distance change in time • • Unit: m/s • Velocity= change in displacement change in time • • Unit: m/s

________: I ran 5 miles on the treadmill ________: I am still in my living room

What was the a) distance traveled? ___________ b) displacement? _____________

Distance- time graph • Can be used to calculate _______ • Tells us how far we have moved each second that passes

Position- Time Graph • Can be used to calculate ________ • Tells us how far away we are from a start point

BOTH • Can be used to calculate • ________________ • Etc • Position graphs just help out with “in which direction? ”

How to calculate average speed or average velocity from a graph? • Find the _____ of the line!! • + slope= forward (positive direction) • - slope = backward (negative direction) • v= Δx / Δ t • Velocity=

Your turn!! Calculate velocities.

Label: • Constant speed • Stationary Question: During which time range are you moving the fastest? 1. Identify. 2. Explain. 3. Then prove with calculations.