You are driving down a straight highway at 20 m/s (72 km/h) on a foggy night. Suddenly you see a truck stopped directly in front of you a distance d down the roadway.
(b) What is the shortest distance d that will allow you to stop before hitting the truck?

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Area representing displacement until full stop

Use areas to find the distances travelled

Here you have one big rectangle and one big triangle.

What to do

• Calculate the displacement during the time period 0 s to 6 s.

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