Homework Help: college physics

Posted by sarah on Thursday, March 10, 2011 at 3:28pm.

A cue ball initially moving at 4.3m/s strikes a stationary eight ball of the same size and mass. After the collision, the cue ball’s final speed is 2.3 m/s at angle 1 with respect to it's original line of motion. The 8 ball moves with unknown speed at an angle 2 unknown with respect to its original line of motion below the horizontal.

Find the cue ball’s angle 1 with respect to its original line of motion above the horizontal. Consider this to be an elastic collision (ignoring friction and rotational motion).

college physics - Anonymous, Monday, March 14, 2011 at 10:18am
Two 2.5 kg masses are 2.5 m apart on a frictionless table. Each has +1.5 µC of charge.

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