Speed

• What should you be able to describe by the end of the video?

  The difference between distance and displacement
• 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 is displacement?

  The distance in a straight line with direction
• Why is displacement a vector quantity?

  It includes both magnitude and direction
• What does speed tell us about an object?

  The distance traveled in a given time
• What is the equation for speed?

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

  The symbol for speed is V
• What is the symbol for distance in physics?

  The symbol for distance is S
• Why is speed considered a scalar quantity?

  It does not involve direction
• If a car traveled 260 meters in 20 seconds, what is its speed?

  13 meters per second
• What is the normal walking speed?

  Around 1.5 meters per second
• What is the running speed of a learner?

  Around 3 meters per second
• What is the cycling speed?

  Around 6 meters per second
• What factors can affect speed?

  Age, fitness, terrain, and distance
• What is the speed of a car on a main road?

  Around 13 meters per second
• What is the speed of a fast train in the UK?

  Around 50 meters per second
• What is the cruising speed of an airplane?

  Around 250 meters per second
• What is the typical speed of sound in air?

  330 meters per second
• How does temperature affect the speed of sound?

  Sound travels faster on warmer days
• Why is the speed of a moving object rarely constant?

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

  Distance = speed × time
• If a car moves at 12 meters per second for 8 seconds, what distance does it travel?

  96 meters
• What are typical speeds you should learn for exams?

  • 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 affect the speed of a moving object?

  • Age and fitness level
  • Terrain (flat vs uphill)
  • Distance traveled (fatigue)
• What is the relationship between speed, distance, and time?

  • Speed = distance / time
  • Distance = speed × time
  • Time = distance / speed