Chapters 3 and 4

1. Newton's 2nd Law

1.1. Force vector = mass scalar * acceleration vector

2. Velocity

2.1. avg v = displacement / time

2.2. instantaneous velocity: at a given moment, speed as time approaches 0

2.3. mass is not a factor

3. Position and Displacement

3.1. position needs origin, not always directional

3.2. displacement is vector, change in position

3.3. can be found using vectors and x and y components

4. Words of the Day

4.1. Ithaca

4.2. Modus Operandi

4.3. Ne Plus Ultra

4.4. Panacea

4.5. Explore

4.6. Red Herring

4.7. Mash-up

5. Lab

5.1. Acceleration graphs

5.1.1. above x-axis is acceleration increasing, below is decreasing acceleration

5.2. Velocity graphs

5.2.1. parabolic identifies movement; open down is -a and open up is +a

6. Acceleration

6.1. rate of change of motion; change in velocity, m/s^2

6.2. a = change in velocity / change in time

6.3. 9.8 m/s^2 in free fall

6.4. mass is indirectly proportionate; mass can be defined as amount of resistance to change in motion

6.5. F = ma is definition of acceleration; F is in Newtons and a is m/s^2

7. 1-D Motion

7.1. v(f) = v(0) + at

7.2. x = x(0) + v(0)t + 0.5at^2

7.3. v^2 = v(0)^2 + 2a(x(f) - x(0))

7.4. Examples: free fall, car moving in x or y direction only

8. 2-D Motion

8.1. same equations as for 1-D, but with velocity and position for x and y separately

8.1.1. for y, a always is 9.8 m/s^2

8.2. Examples: catapault, kicking a soccer ball