Any questions??

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Discussion

FOUR-STEP PLAN

Step 1: FBD – Draw individual free body diagrams (FBDs) of each particle, along with an FBD of all three particles.

Step 2: Linear impulse/momentum – Carefully consider each FBD above. In which directions (if any) is linear momentum conserved for each FBD.

Step 3: Kinematics – None needed here.

Step 4: Solve – Use the conservation of linear momentum equations from Step 2, along with the coefficient of restitution equation in the “n”-directions for the two impacts.