IRC Questions (Distance, Speed, and Acceleration)

• What is the formula for calculating speed?

  Distance / time
• Describe in words what is meant by acceleration.

  Change in velocity per second.
• What does the triangle (Δ) in front of the 'v' mean in the acceleration equation?

  Change in.
• How is the gradient of a line on a distance-time graph related to its speed?

  It shows that it is moving at a constant speed.
• What does a horizontal line on a velocity-time graph tell us about the motion of an object?

  It shows that it is moving at a constant velocity.
• How can distance be determined from a velocity-time graph?

  The area under a velocity-time graph.
• What is stopping distance?

  Thinking distance + breaking distance.
• Name two factors that affect the thinking distance of a car. (F and S)

  Fatigue and speed.
• Name 2 factors that effect the braking distance of a car. (RC and BC)

  Road conditions and brake conditions.
• What is speed measured in?

  metres/second.