A62 kg skier is moving at 6.5 m/s on frictionless horizontal snow-covered plateau when she encounters a rough patch 3.50 m long. the coefficient of kinetic friction between this patch and her skis is 0.30. after crossing the rough patch and returning to friction free snow, she skis down an icy frictionless hell 2.5 m high. a) how much work is done by friction in crossing the patch? b) how fast is the skier moving when she gets the bottom of the hill? [hint: b) use the conservation of total
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Physics, 22.06.2019 08:00
If the force applied to an object remains constant, is more power needed for the object to move faster ? explain
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Physics, 22.06.2019 09:50
Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c.the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors
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Physics, 22.06.2019 10:00
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?
Answers: 1
A62 kg skier is moving at 6.5 m/s on frictionless horizontal snow-covered plateau when she encounter...
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