Stopping distances

• What is the stopping distance when travelling at 20mph?

  12m or 3 car lengths
• What is the stopping distance when travelling at 30mph?

  23m or 6 car lengths
• What is the stopping distance when travelling at 40mph?

  36m or 9 car lengths
• What is the stopping distance when travelling at 50mph?

  53m or 13 car lengths
• What is the stopping distance when travelling at 60mph?

  73m or 18 car lengths
• What is the stopping distance when travelling at 70mph?

  96m or 24 car lengths