During braking, a truck has a steady deceleration of 7.0 m/s^2. A box sits on the platform of this truck. The box begins to slide when the braking begins, and after sliding a distance of 2.0 m (relative to the truck), it hits the front of the truck. With what speed (relative to the truck) does the box hit? The coefficient of kinetic friction for the box is 0.50.
Conceptual Issue: In this problem, we can see that the truck is decelerating at 7.0 m/s^2. Does this mean that the box resting on the back of the truck starts moving forward towards the front of the truck with an acceleration of 7.0 m/s^2?