1. A hockey puck having a mass of 0.9 kg slides on the horizontal, frictionless surface of an ice rink. Four hockey sticks strikethe puck simultaneously, exerting the forces on the puck shown in figure. Where F, = 7N, F2 = 8N, F; = 3N, F4 = 4N a) Determine both the magnitude and the direction of the puck' net force b) Determine both the magnitude and the direction of the puck' acceleration F2 F1 70° 40° 20° 50° F3 F4

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