The car moves on a very long straight highway at an initial velocity of 2.0m/s when it started to accelerate at a rate of 1.5m/s2. When the car reaches a diplacement of 1km, it started to decelerate at constant rate until it stop.  A. What is the car's final velocity (assumed that the car directs in a constant direction) before it started to decelerate (slow down)? *Please explain also

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