Linear Motion

1. Magnitude only
2. Examples
   1. Distance (d)
      1. How far one point is from another
      2. Metres (m)
   2. Speed
      1. Distance travelled per unit time
      2. Metres per second (m/s)
   3. Mass
   4. Temperature
   5. Time (t)
      1. Measures the duration of events
      2. Seconds (s)
   6. Electric current

1. Both magnitude and direction
2. Displacement (s)
   1. Distance in a given direction
   2. Metres (m)
   3. The straight line distance between two points
      1. Accompanied by the direction
3. Velocity (u or v)
   1. The rate of change of displacement with respect to time
   2. Average velocity = (u + v)/2
      1. U = initial velocity
      2. V = final velocity
4. Acceleration (a)
   1. Rate of change of velocity with respect to time
   2. Metres per second squared
   3. (change in velocity) / (time taken)
      1. (v - u)/ t
5. Other examples
   1. Momentum
   2. Force
   3. Magnetic flux density

Attachments:

• Linear Motion: Newton's Equations of Motion

1. v = u + at
2. s = u + (1/2)at²
3. v² = u² +2as

Attachments:

• Linear Motion: Graphs of Linear Motion

1. Distance-Time Graphs
   1. Slope = velocity
2. Velocity-Time Graphs
   1. Slope = acceleration
   2. Area under the graph = distance travelled

Attachments:

• Linear Motion: Basic Vector Operations

1. Adding co-linear vectors
   1. Same direction
      1. Add magnitudes
      2. Use same direction
   2. Opposite direction
      1. Subtract magnitudes
      2. Use direction of larger vector
2. Adding perpendicular vectors
   1. Pythagoras theorem
   2. Sine, cosine, tangent
3. A vector can be resolved into two perpendicular component vectors