1. Do Now:
What is acceleration? Provide a real life example of an object in the process of acceleration.

2. Objective: Agenda: Be able to describe the motion of everyday objects.
Quiz
Acceleration and Free Fall Introduction
Problems
Agenda:

3. Electric Current Notes
Acceleration
Acceleration is the rate velocity changes.

4. Electric Current Notes
Acceleration
Acceleration = change in velocity
in symbols, a = ∆v
time t

5. Units of Acceleration
Since acceleration is a velocity divided by a time, its units are a distance unit divided by 2 time units.
This is commonly written 2 ways:
m/s/s = m/s2
km/hr/s = km/hr.s

6. Constant Acceleration
Electric Current Notes
Constant Acceleration
In many common situations, an object’s acceleration is constant, or at least approximately constant.
In this case:
Average acceleration = instantaneous acceleration

7. Electric Current Notes
Free Fall
Free fall is motion under the influence of gravity.

8. Acceleration in Free Fall
Electric Current Notes
Acceleration in Free Fall
The acceleration of an object in free fall is constant.
At the surface of Earth, the free-fall acceleration is about or 9.8 m/s2.

9. Electric Current Notes
Air Resistance
The effect of air resistance is to slow an object down and/or decrease its acceleration.