A car accelerates from rest at 15 m∙s-2 for 2 s on a horizontal road.
4.1 Define the term acceleration. (2)
4.2 Calculate the:
4.2.1 Distance covered by the car (3)
4.2.2 Velocity of the car (3)
While travelling at a constant velocity of 108 km∙h-1, the driver of a car notices a sign warning motorists to keep a safe 2-second following distance. At that instant the car is 80 m behind a truck that is travelling at a constant velocity of 90 km∙h-1
.
4.3 Explain the meaning of a safe 2-second following distance. (2)
4.4 Calculate the safe 2-second following distance behind the truck. (6)
4.5 Calculate how long it will take the motorist to get to a safe 2-second following
distance behind the truck. (5)
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