Physics, 21.11.2020 01:40 jessnolonger
5. Eliza starts from rest at the top of a 35 m hill, snowboards down a 30° incline into a valley, and continues up a 25 m hill. Both hill heights are measured from the valley floor. Assume you can neglect friction.
a. How fast is Eliza snowboarding at the bottom of the valley?
b. What is Eliza’s speed at the top of the next hill?
Answers: 2
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Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
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Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).
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5. Eliza starts from rest at the top of a 35 m hill, snowboards down a 30° incline into a valley, an...
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