A Sticky Hockey Puck Slides Along a Frictionless,horizontal Ice Surface

question 42

Multiple Choice

A sticky hockey puck slides along a frictionless,horizontal ice surface at 75 m/s in the +x direction.It collides with a second sticky puck originally sliding at 25 m/s in the -y direction.They collide totally inelastically.If the first puck has a mass equal to twice that of the second,what is the angle of their final velocity vector below the +x direction?

• A) 37 degrees
• B) 9.5 degrees
• C) 49 degrees
• D) 42 degrees
• E) 34 degrees

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