Answers: 3
Physics, 21.06.2019 22:30, ayoismeisjjjjuan
An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0Ā° above the horizontal. it then moves 127 ft at an angle of 46.0Ā° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 11:20, kendallnowell18
If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t ā 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12ā3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s
Answers: 1
Physics, 22.06.2019 21:00, tobyfoerst
If the specific heat of a metal is 0.850 j/g Ā°c, what is its atomic weight?
Answers: 2
Poly is pushing a box across the floor with a force of 30 N The force of gravity is -8 N...
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