1. EQ: What is the difference between speed and velocity?
MEASURING MOTION
EQ: What is the difference between speed and velocity?

3. What is motion and how do we know it occurred?
when an object changes position over time when compared with a reference point
Reference point- an object that appears to stay in place
Ex: mountains, buildings, & trees

4. Average speed= total distance total time
What is speed
and how do we
calculate it?
Average speed= total distance
total time
the rate at which an object moves
SI Units- m/s, km/h

5. If you take a walk for 1. 5 hours and travel 7
If you take a walk for 1.5 hours and travel 7.5 km, what is your average speed?
Average speed= total distance total time Average speed= 7.5 km 1.5 hrs Average speed= 5 km/h

7. Velocity Riddle: Two birds leave the same tree at the same time
Velocity Riddle: Two birds leave the same tree at the same time. They both fly at 10 km/h for 1 hour, 15 km/h for 30 minutes, and 5 km/h for 1 hour. Why don’t they end up at the same destination????

8. What is velocity?
The speed of an object in a certain direction
*DIRECTION MATTERS!*
Ex: 25 m/s forward
55 m/h south

10. When does velocity change?
When an object’s speed or direction changes

12. The rate at which velocity changes
What is acceleration?
The rate at which velocity changes
*The faster velocity changes, the greater the acceleration.*
Acceleration= final velocity- starting velocity
time it takes to change velocity
SI Units- meters per second per second (m/s/s)

15. What are the 2 types of acceleration?
Positive- velocity increases
Negative (deceleration)- velocity decreases

16. Example of Acceleration
How Velocity Changes
A plane taking off
Increase in speed
A car stopping at a stop sign
Decrease in speed
Jogging on a winding trail
Change in direction
Wind gusting
Driving around a corner
Standing at Earth’s equator