The trunk moves one way. The force points the other. Both are true at once.
A 40-kg trunk sliding across a floor slows down from 5.0 to 2.0 m/s in 6.0 s. Assuming that the force acting on the trunk is constant, find its magnitude and its direction relative to the velocity vector of the trunk.as printed, page 52
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Two kilograms' worth of weight, dragging sideways on a forty-kilogram trunk. A very slippery floor.
You would barely feel this in a car. It takes the trunk twenty seconds to slide to a full stop from 5 m/s.
Not asked, but the average speed was 3.5 m/s for six seconds. A long slide.
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