Dievsky V.A. - Solution of task D1 variant 26 (D1-26)

Dievsky V.A. - Solution of task D1 variant 26 (D1-26)

D1-26 Dievskiy

To measure the depth of the excavation, a weight of m, which reaches trough the t = 4 s, is thrown to its bottom without initial speed. The air resistance is proportional to the speed R = -0.98mv. Determine the depth of the excavation.

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