Suppose a box is being dragged by a force of 100 n over a rough surface. if the coefficient of kinetic friction at the interface of the box and surface is 0.2, and the box is moving with a constant speed of 2 m/s, calculate the net work done on the box if it is dragged for 1.0 m.
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Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.
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Suppose a box is being dragged by a force of 100 n over a rough surface. if the coefficient of kinet...
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