Dievsky V.A. - Solution of task D1 variant 29 (D1-29)

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D1-29 Dievskiy

The body with a mass m = 15 kg rises along a smooth inclined plane making an angle α = 30 ° with the horizon, obtaining an initial velocity v0 = 10 m / s. The resistance of the medium is proportional to the speed R = -1.5v. Determine the time elapsed before the body stops.