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mikebmxer
 3 years ago
A ball is thrown directly upward from ground level with an initial speed of 80 ft/s. How high will it go? When will it return to the ground? explain please.
mikebmxer
 3 years ago
A ball is thrown directly upward from ground level with an initial speed of 80 ft/s. How high will it go? When will it return to the ground? explain please.

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ktklown
 3 years ago
Best ResponseYou've already chosen the best response.0Do you know the acceleration of gravity on Earth's surface?

mikebmxer
 3 years ago
Best ResponseYou've already chosen the best response.0it doesnt say in the problem.

henkjan
 3 years ago
Best ResponseYou've already chosen the best response.1you can solve it by conservation of energy... 1/2*v^2 = g*h Although you exclude drag from the air in this equation.

ktklown
 3 years ago
Best ResponseYou've already chosen the best response.0Well, the problem probably assumes you know the acceleration of gravity, which is 32f/s^s. So plug that into the motion equation v^2 = v0^2 + 2as, and solve for s.

henkjan
 3 years ago
Best ResponseYou've already chosen the best response.11/2*80^2 = 32*h h = 100 ft
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