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14.01.2020 •
Physics
Askydiver free falls from rest. how long does it take for the skydiver to reach 7 m/s?
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Ответ:
The skydiver needs 0.71 seconds to reach 7 m/s
Explanation:
Free Fall Motion
When an object is dropped in free air (no friction) from a certain height h, it follows a free-fall motion, whose acceleration is due exclusively to gravity. The speed at a moment t when the object is dropped (from rest) is:
We need to find How long does the skydiver needs to reach 7 m/s. We solve for t
The skydiver needs 0.71 seconds to reach 7 m/s
Ответ: