Forces, stopping and braking

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Question 18
Easy

Figure 1 shows an electronic variable speed limit sign on a motorway gantry.

An electronic smart motorway gantry displaying a speed limit of 50 mph in a red circle, with an amber warning text display below reading 'WET ROAD'. The normal speed limit for this motorway is 70 mph.

Explain why it is safer for drivers to travel at a slower speed when the road is wet.

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Forces, stopping and braking Questions

  1. GCSE
  2. /Physics
  3. /Forces, stopping and braking