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A train starts from rest and its speed increases at a constant rate α to v and then remains constant for an interval and finally decreases to zero at a constant rate β. The total distance travelled by train is l. The time taken to complete the journey is t. Then, |
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Answer» A train starts from rest and its speed increases at a constant rate α to v and then remains constant for an interval and finally decreases to zero at a constant rate β. The total distance travelled by train is l. The time taken to complete the journey is t. Then, |
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