InterviewSolution
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InterviewSolution
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A white ball of mass 1.0 kg moving with initial speed u = 0.5 m s -1 collides with stationary red ball of same mass, they move forward making angle of 90° between their paths. Their speed is A. 1 m s-1 B. 0.354 m s-1 C. 2 m s-1 D. 3 m s-1 |
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Answer» B. 0.354 m s -1 1 st equation vertical momentum (sin A sin B)2 nd equation horizontal momentum (cos A cos B) A+B=90 degrees v=(under square 2)/4~ 1.4/4= 0.354 Answer: B |
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