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A car P is moving with uniform speed of 5m/s towards a carriage of mass 9kg at rest kept on the rails at point B. the height of AC is 120m.cannon balls of 1kg are fired from the car with an initial velocity of 100m/s at an angle 30 degree with the horizontal.the first cannon ball hits the stationary carriage after a time t' and stick to it. determine t'. the second cannon ball is fired . assume that resistive forces between the rails and the carriage is constant and ignore the vertical motion of carriage . if the second ball also hits and sticks to the carriage. what will be the horizontal velocity of carriage just after the second impact. DIAGRAM:
car--> 0--0 C
| ( )<--carriage
| 0-0

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