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A car is waiting at an intersection. When the traffic lightturns green, the car starts...

A car is waiting at an intersection. When the traffic light turns green, the car starts moving. After some time the car comes to rest at another traffic light. The figure below shows the velocity of the car as a function of time.

12 8 6 4 2 0 0 1 2 3 45 6 7 8 9 10 11 12 t (s)

What is the acceleration of the car in the first stage?
What is the acceleration of the car in the third stage?
What is the total distance travelled by the car between the two traffic lights?


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