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dybydx
Lv 4
A body falls from 45 feet. How fast is it going at impact? - ignore air resistance.?
What equation do you use? How do you convert the answer to miles/hour? Thank you so much.
1 Answer
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- ?Lv 610 years agoFavourite answer
v^2=u^2+2as
where v is final velocity, u is initial velocity (0), a is acceleration (due to gravity in this case 33.2 ft/sec^2) and s is the distance (45).
88 ft/sec = 60 mph, so you can scale the answer from this.
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