Two objects are thrown from the cliff above the ground at the same time. First object is thrown up, and the second object is thrown down, both with the same initial speed of 30 m/s. Assume no air resistance. The object thrown down hits the ground in 5 seconds. a) Draw a sketch showing datum where initial position for each object is zero. Show which direction is positive in your calculations for each object.
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Which notation is used to represent an alpha particle? a. b. c. d.
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Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
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The ability to make things happen is also called a. heat b. force c. matter d. energy
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Two objects are thrown from the cliff above the ground at the same time. First object is thrown up,...
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