alleryWhat force moves a rider along a zip line?
AWind sails
BSteam
CMagnetism
DGravity
Answer & Solution
Correct answer: D. Gravity
1. A zip line slopes downward from a high point to a lower one.
2. The rider slides down because gravity pulls the body along the cable.
3. No steam, sail or magnet is used.
_Source: Wikipedia, Transport, section Other modes_
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