(Answered) Starting from rest a truck travels in a straight line for

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Starting from rest, a truck travels in a straight line for 9.0 s with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes for 2.0 s, causing a uniform acceleration of -3.0 m/s2 over that time.

(a) What is the truck's speed at the end of the braking period? m/s

(b) What is the total distance traveled by the truck (from the point where it started at rest to the end of the braking period)?

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