Determine speed of each marble instantly after collision
A marble of 50 gram moving at 2.0 m/s hits a 20 gram marble at rest. Determine the speed of each marble instantly after the collision? Suppose the collision is perfectly elastic.
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At an instant if the string forms an angle of 40 degrees above the horizontal, the magnitude of the tension in the string is around 3.0 N. Determine the speed of the ball at this instant?
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