Suppose a skydiver has a mass = 75 kg. She is falling toward the Earth. Calculate the skydiver’s Gravitational Potential Energy at the point when the skydiver is 125 m above the Earth. Formula: PE =
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What is the Kinetic Energy of the 75 kg skydiver if she is falling at 52 m/s?
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Calculate the Total Mechanical Energy for the skydiver in questions 7 & 8. (Total Mechanical Energy is the sum of the Kinetic and the Potential energy. Use your answers from 7 & 8 to make this calculation.
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SHOW YOUR WORK FOR ALL 3 SECTIONS PLEASE

To travel at constant speed, a car engine provides 24kw of useful power. the driving force on the car is 600n. at what speed does it travel?

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Classify the following soils according to the uscs classification system. provide appropriate uscs designations. a) this sample of well-graded gravel with sand was obtained from a large earthen dam in vancouver, canada. the sample has 73% fine to coarse sub-angular gravel, 25% fine to coarse sub-angular sand and 2% fines. the maximum size of the particles is 75 mm. the coefficient of curvature is 2.7, while the uniformity coefficient is 12.4. b) this dark brown and wet soil with a “strong organic odor” has 100% passing the no. 200 sieve. the liquid limit of the material is 32% when not dried and is 21% when oven-dried. the plastic index is 21% when not dried. c) this sand has 61% predominantly fine sand, 23% silty fines, and 16% fine sub-rounded gravel size. the maximum size is 20 mm. the liquid limit is 33% and the plastic limit is 27%. d) this soil has 74% fine to coarse sub-angular reddish sand and 26% organic and silty dark brown fines. the liquid limit is 37% when not dried and is 26% when oven dried. the plastic index is 6% when not dried.