1. Acceleration
Define Acceleration. What are the units for acceleration. Is acceleration a scalar or vector quantity
Objective(s)/SWBAT (Students will be able to):
Cite kinematic equations
Solve constant acceleration problems
Activities:
Derive 4 kinematic equations
2 or 3 example problems
Closure:
Students solve constant acceleration problems
Assessment:
Problem set
Test
Keystones: 3.2.B

2. Today Students will be able to: Site kinematic equations
Solve constant accelerations problems
Derive the kinematic equations
Do problems 19, 21, 23 (odd year)
Do problems 20, 22, 26 (even year)
Keystones: 3.2.B

3. Kinematic Equations
Acceleration is defined as the rate of change in velocity.

4. Assume constant acceleration
Kinematic Equations
Area = Vit
Area = ½(Vf - Vi)t Vf Vi t
Assume constant acceleration

5. Second Equation
The area under the curve on a velocity vs. time graph yields displacement.

6. Kinematic Equations Keystones: 3.2.B Do problems 14 They do
Students work on section 2-4 problems
Keystones: 3.2.B

7. Example Problem
At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 80 km/h to 110 km/h?
Do problems 14
They do
Students work on section 2-4 problems
Keystones: 3.2.B

8. Example Problem
A car accelerates at a constant rate from 15 m/s to 25 m/s while it travels 125 m. How long does this motion take?
Do problems 14
They do 2nd example problem.
Students work on section 2-4 problems
Keystones: 3.2.B

9. Example Problem
A bike rider accelerates constantly to a velocity of 7.5 m/s during 4.5 s. The bike’s displacement is + 19 m. What was the initial velocity of the bike?
Do problems 14
They do 2nd example problem.
Students work on section 2-4 problems
Keystones: 3.2.B