Situational Analysis: During your recent visit to the cemetery, you noticed the inscriptions on some headstones have become barely legible whereas inscriptions on others are sharp and clear.
Cite three possible factors that contributed to the present state of the headstone inscriptions.

Factors
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Explanations
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On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?