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Newton's 2nd Law Problems (with Kinematics) 1. A hockey puck with mass 0.160kg is at rest at the origin on the horizontal, frictionless surface of the rink. At t = 0, a player applies a force of 0.250N to the puck parallel to the surface, He continues to apply the force until t = 2.00s. What are the position and speed of the puck at t = 2.00? Work 2. An 8.0kg box slides down a surface that is inclined at 53 below the horizontal at a distance of 2.00m. The coefficient of kinetic friction between the package and the surface is 0.40. a. Calculate the work done on the box by friction. b. Calculate the work done on the box by gravity. c. Calculate the work done on the box by normal force. d. Calculate the total work done on the box