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The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? ab c d
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A10n falling encounters 10n of air resistance (upward force). the net force on the object is:
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Aparticle is moving around in a circle and its position is given in polar coordinates as x = rcosθ, and y = rsinθ, where r is the radius of the circle, and θ is in radians. from these equations derive the equation for centripetal acceleration.
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Ahydraulic system is used to a.. increase force. c.. increase pressure. b.. decrease pressure. d.....
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