Motion (P9)

• What is distance?

  Distance is how far an object moves, it does not involve direction.
• What is displacement?

  Both the distance an object moves in a straight line, and the direction of the straight line.
• What does scalar mean?

  A physical quantity that only has magnitude, not direction.
• What does vector mean?

  A physical quantity with both direction and magnitude.
• What are some examples of scalar quantities?

  Speed, distance
• What are some examples of vector quantities?

  Displacement, velocity
• What are the typical speeds of a person?

  Walking - 1.5 m/s

  Running - 3 m/s

  Cycling - 6 m/s
• What is the equation for distance travelled?

  Distance travelled = speed x time
• What is velocity?

  An object's speed in a given direction.
• Describe motion in a circle.

  Constant speed but changing velocity.
• What is the equation for speed?

  Speed = distance/time
• What does a flat section on a distance-time graph show?

  Stationary
• What does a downhill section on a distance-time graph show?

  Decelerating
• What does a diagonal line on a distance-time graph show?

  Moving at a constant speed
• What does a downhill section on a distance-time graph show?

  Going back to the start
• What does the steepness of a line on a distance-time graph represent?

  The steeper the line, the faster it's going.
• What does a flat section on a velocity-time graph show?

  Constant velocity
• What does a upward diagonal line on a velocity-time graph show?

  Accelerating
• What does the area under the line on a velocity-time graph show?

  Distance travelled
• What does the steepness of a line represent on a velocity-time graph?

  The steeper the lounge, the faster
• How do you calculate acceleration on a velocity-time graph?

  final velocity-initial velocity ÷ time
• What are the units of acceleration?

  m/s²
• What's the equation of distance

  Distance (m) = Speed x Time