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Four particles have the following masses and (x, y, z) coordinates: 4.0 kg (4, -3, 5); 3.0 kg (5, 9, 7); 3.0 kg (8, 5, 3); and 5.0 kg (7, 3, 2 ). The (x, y, z) coordinates of the center of the mass of these particles are:A 0.80 kg rubber ball is dropped from the window of a building. It strikes the sidewalk below at v; = - 29.6 m/s and rebounds up at Vf =+ 13.1 m/s. The duration of contact between the ball and the sidewalk is At = 8.6 x 10- s. What is the magnitude of the average impact force, in N, on the ball? Please round your answer to the nearest whole number (integer)