Physics, 28.12.2019 06:31 jordan495413
Two snowy peaks are h = 790 m and h = 750 m above the valley between them. a ski run extends bewteen the peaks, with a total length of 3.1 km and an average slope of ? = 30°.
(a) a skier starts from rest on the higher peak. at what speed will he arrive at the top of the lower peak if he just coasts without using the poles? ignore friction.
(b) approximately what coefficient of kinetic friction between snow and skis would make him stop just at the top of the lower peak?
Answers: 2
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What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.
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