Momentum Physics problem help?

Posted on 1970-01-01 00:00:00 in Physics by BRENDOM

In a game of pool, the cue ball strikes another ball initially at rest. After the collision, the cue ball moves at 3.70 m/s along a line making an angle of 24.0° with its original direction of motion. The second ball acquires a speed of 1.80 m/s. 

a) Using momentum conservation, find the angle between the direction of motion of the second ball and the original direction of motion of the cue ball. 

b) Find the original speed of the cue ball. 

Apparently the angle of 66 degrees and 4.115 m/s for the cue ball was wrong. So please help me out here.... most appreciated.

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