A hockey puck slides along a horizontal ice surface at
A hockey puck slides along a horizontal ice surface at 20.0 m/s, hits a flat vertical wall, and bounces off. Its initial velocity vector makes an angle of 35o with the wall and it comes off at an angle of 25o moving at 10.0 m/s. Choose the to be along the wall in the direction of motion and the y-axis to be perpendicular (into) to the wall.
(a) Write each velocity in unit vector notation.
(b) Determine the change in velocity in unit vector notation.
(c) Determine the magnitude and direction, relative to the wall, of this velocity change.
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