1. Free Fall
Section 3-3

2. Acceleration Due to Gravity
Acceleration Due to Gravity – the acceleration of an object in free fall that results from the influence of Earth’s gravity
g (acceleration due to gravity) = 9.8 m/s2
g is a positive number

3. A Dropped Object
Every second an object falls it increases the velocity 9.8 m/s
After 1 second the velocity is 9.8 m/s
After 2 seconds the velocity is 19.6 m/s

4. Ball thrown upward Upward is chosen as the positive direction
Initial velocity is positive
Acceleration is negative “g” or -9.8 m/s2
Example on pages 72 and 73

5. Free-Fall Rides
Free fall rides are designed to give you the feeling of free fall
They consist of three parts, one where the ride goes up, momentary suspension, and the free fall
The lack of force holding up on the riders gives them a feeling of free fall