WEEK 19

• what is the difference between distanve and displacement?

  displacement = involves direction (vector quantity)

  distance = doesn't involve direction (scalar quantity)
• what is the typical value for human walking speed, running speed, and cycling speed?

  walk - 1.5m/s

  run - 3m/s

  cycling - 6m/s
• what are the standard units for speed?

  meters per second (m/s)
• what is velocity?

  the speed of an object in a given direction
• what is the difference between speed and velocity?

  velocity - involves direction (vector quantity)

  speed - doesn't involve direction (scalar quantity)
• what is the typical value for speed in air?

  330 m/s
• what is displacement?

  the distance and direction of an end point compared to the start point
• what equation links distance, speed, and time?

  distance travelled = speed X time
• what does the gradient of a distance time graph represent?

  speed