Pre Lab Questions 1 A billiard ball collides head on with billiard ball at rest a Sketch a position vs time graph for each ball include position before the collision once the collision occurs and after the collision b What can be said about the conservation of momentum for the collision Explain your answer 2 Write down the total momentum for two marbles of mass m both moving at velocity v What is the kinetic energy of the system Momentum m v m v 2mv Kinetic energy 0 5 m v2 0 5 m v2 mv2 3 When you drop two marbles at once why doesn t only one marble come off the end twice as fast Write down the kinetic energy of one marble with mass m and velocity 2v and compare this to your answer in Experiment 1 Post Lab Question 4 to check Note Assume the collisions are perfectly elastic Both marbles are acted independently on by gravity so according to Newton s third law they will both be individual 2014 eScience Labs LLC All Rights Reserved 2014 eScience Labs LLC All Rights Reserved
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