Physics, 30.03.2020 19:00 GreenHerbz206

A hockey puck of mass m traveling along the x axis at 4.5 m/s hits another identical hockey puck at rest. If after the collision the second puck travels at a speed of 3.5 m/s at an angle of 30° above the x axis, what is the final velocity of the first puck?

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A hockey puck of mass m traveling along the x axis at 4.5 m/s hits another identical hockey puck at...