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?

  Speed tells us the distance an object traveled in a given time
• How do you calculate the speed of a moving object?

  Speed is calculated by dividing the distance traveled by the time taken
• What does distance tell us about an object's movement?

  Distance tells us how far an object moves without involving direction
• Why is distance considered a scalar quantity?

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

  Displacement includes direction
• Why is displacement considered a vector quantity?

  Because it includes both magnitude and direction
• What is the equation for speed?

  Speed = distance traveled / time taken
• 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
• If a car traveled 260 meters in 20 seconds, what is its speed?

  The speed is 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 a 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 moving?

  Age, fitness level, terrain, and distance traveled
• How does the speed of sound vary?

  The speed of sound can vary with temperature
• Why do we calculate average speed instead of instantaneous speed?

  Because the speed of a moving object is rarely constant
• How do you calculate the distance traveled by an object moving at a constant speed?

  Distance equals speed multiplied by time
• If a car is moving at a constant speed of 12 m/s for 8 seconds, what distance does it travel?

  The distance traveled is 96 meters
• What types of questions can you find in the revision workbook related to speed and distance?

  • Calculating speed from distance and time
  • Calculating distance from speed and time
  • Identifying typical speeds for various activities