Reaching the base of the cliff and discarding his climbing gear,
our hero spots a mob of angry physics students, one of them
carrying a familiar chainsaw, and flees for his life. He sprints
southward starting from rest, initially accelerating at 5 𝑚⁄𝑠2. His
mass, clothed and with coffee in hand, is roughly 60 kg, whereas
the Earth’s mass is roughly 6 × 1024 kg. What are the direction and
magnitude of the Earth’s initial acceleration due to the
hero's evasive action?
Reaching the base of the cliff and discarding his climbing gear, our hero spots a mob of angry physics students, one of
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