1. Physical Science Warm-Up
When you think of acceleration, what comes to mind?
TAKE YOUR BEST EDUCATED GUESS AT THE FOLLOWING:
What is acceleration?
What is velocity?

2. Acceleration

3. Change in Velocity
The rate at which velocity (speed in a given direction) changes occur is called acceleration.

4. Change in velocity = final – starting velocity velocity
Acceleration= final velocity- starting velocity
time
Acceleration= change in velocity

6. - A constant acceleration produces a straight line or linear slope (rise/run). - The slope of a non-linear velocity-time graph (rise/run) will predict an objects instantaneous acceleration. a = v/t

7. Free fall
The constant acceleration of an object moving only under the force of gravity is "g".
The acceleration caused by gravity is 9.8 m/s2
If there was no air, all objects would fall at the same speed
Doesn’t depend on mass

8. Galileo Acceleration= change in velocity time t = 0 t = 1 second
t = 2 seconds
t = 3 seconds

9. Falling Air resistance will increase as it falls faster
An upward force on the object
Eventually gravity will balance with air resistance
Reaches terminal velocity - highest speed reached by a falling object.

10. Next Step
Complete all worksheets from previous class (extra on bench if you happened to misplace yours)
Complete acceleration and velocity worksheet
Lab NEXT TIME I SEE YOU