Dievsky V.A. - Solution of task D1 variant 12 (D1-12)
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D1-12 Dievskiy
A skier weighing m = 70 kg descends without the initial speed along a slope making an angle α = 30 ° with the horizon, not pushing with sticks. The length of the descent is l = 100 m, the coefficient of sliding friction of skis about snow is f = 0.1. The strength of air resistance is proportional to the square of the velocity R = 0.4v2. Determine the speed of the skier at the end of the descent.
A skier weighing m = 70 kg descends without the initial speed along a slope making an angle α = 30 ° with the horizon, not pushing with sticks. The length of the descent is l = 100 m, the coefficient of sliding friction of skis about snow is f = 0.1. The strength of air resistance is proportional to the square of the velocity R = 0.4v2. Determine the speed of the skier at the end of the descent.
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- Added to the site 13.04.2021
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Cumulative discount
200 $ | the discount is 15% |
100 $ | the discount is 10% |
50 $ | the discount is 7% |
20 $ | the discount is 5% |
10 $ | the discount is 3% |
5 $ | the discount is 2% |
1 $ | the discount is 1% |
Check your discount
Amount of purchases from the seller: $
Your discount: %
0.04 $ gift card for a positive review