Speed

• What is meant by speed?

  The distance traveled in a given time
• How do you calculate the speed of a moving object?

  Speed = distance / time
• What does distance tell us about an object's movement?

  How far an object moves without direction
• Why is distance considered a scalar quantity?

  It has magnitude but no direction
• What does displacement include that distance does not?

  Direction of the straight line movement
• Why is speed considered a scalar quantity?

  It does not involve direction
• What is the equation for speed?

  Speed = distance / time
• What symbol is used for speed in physics?

  V
• What symbol is used for distance in physics?

  S
• If a car traveled 260 meters in 20 seconds, what is its speed?

  13 meters per second
• What are typical speeds for various activities?

  • Normal walking speed: 1.5 m/s
  • Running speed: 3 m/s
  • Cycling speed: 6 m/s
  • Car on main road: 13 m/s
  • Fast train in the UK: 50 m/s
  • Cruising airplane: 250 m/s
  • Speed of sound in air: 330 m/s
• What factors can affect the speed of a person?

  Age, fitness level, and terrain
• How does terrain affect speed?

  People move faster on flat ground
• How does distance traveled affect running speed?

  People run faster at the start of long distances
• Why is the speed of a moving object rarely constant?

  It changes during different points of a journey
• How do you calculate distance traveled at constant speed?

  Distance = speed × time
• If a car moves at 12 m/s for 8 seconds, what distance does it travel?

  96 meters
• What should you do to prepare for questions on speed and distance?

  • Review typical speeds
  • Practice calculations
  • Use revision workbook