Chapters 3 and 4

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Chapters 3 and 4 by Mind Map: Chapters 3 and 4

1. Acceleration

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

1.2. a = change in velocity / change in time

1.3. 9.8 m/s^2 in free fall

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

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

2. Newton's 2nd Law

2.1. Force vector = mass scalar * acceleration vector

3. Velocity

3.1. avg v = displacement / time

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

3.3. mass is not a factor

4. Position and Displacement

4.1. position needs origin, not always directional

4.2. displacement is vector, change in position

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

5. Words of the Day

5.1. Ithaca

5.2. Modus Operandi

5.3. Ne Plus Ultra

5.4. Panacea

5.5. Explore

5.6. Red Herring

5.7. Mash-up

6. 1-D Motion

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

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

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

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

7. Lab

7.1. Acceleration graphs

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

7.2. Velocity graphs

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

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