A car, initially travelling at 81 km h-¹, is travelling down a road when it comes up to a school zone. The driver approaches the school zone and slows. Once the driver has passed the school zone, the driver accelerates again. The acceleration-time graph of the car's 40 s journey is shown below.

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answer the following motion question.

A car, initially travelling at 81 km h-¹, is travelling down a road when it comes up to a school
zone. The driver approaches the school zone and slows. Once the driver has passed the school
zone, the driver accelerates again. The acceleration-time graph of the car's 40 s journey is shown
below.
a
Acceleration (m/s/s)
34
2+
T
№
→→→→Time (s)
4 8 12 16 20 24 28 32 36 40
−3+
A mobile police camera is set up in the school zone to capture any speeding motorists. A
speeding motorist is a motorist that travels through the school zone with a speed greater than
40 km h-¹. Calculate the speed that the car travelled through the school zone to determine if
the car will get a speeding ticket.
Transcribed Image Text:A car, initially travelling at 81 km h-¹, is travelling down a road when it comes up to a school zone. The driver approaches the school zone and slows. Once the driver has passed the school zone, the driver accelerates again. The acceleration-time graph of the car's 40 s journey is shown below. a Acceleration (m/s/s) 34 2+ T № →→→→Time (s) 4 8 12 16 20 24 28 32 36 40 −3+ A mobile police camera is set up in the school zone to capture any speeding motorists. A speeding motorist is a motorist that travels through the school zone with a speed greater than 40 km h-¹. Calculate the speed that the car travelled through the school zone to determine if the car will get a speeding ticket.
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