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A box rests on the (frictionless) bed of a truck. The truck
driver starts the truck and accelerates forward. The box
immediately starts to slide toward the rear of the truck bed.
Discuss the motion of the box, in terms of Newton's laws, as
seen (a) by Mary standing on the ground beside the truck,
and (b) by Chris who is riding on the truck (Fig. 4–35).
FIGURE 4-35
a
Question 2.
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