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At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.2 meter per seconds square. At the same instant a truck, travelling with a constant speed of 9.5 m/s, overtakes and passes the automobile. How fast will the automobile be travelling at that instant?
The speed of a car traveling in a straight line is reduced from 45 to 30 miles per hour at a distance of 264 feet. Find the distance in which the car can be brought to rest from 30 miles per hour, assuming the same constant deceleration.
First let's convert the speed to .
Since the deceleration is constant, let's integrate.
Substituting and and rewriting the equation,
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