InterviewSolution
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InterviewSolution
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A particle moves along the x-axis as follows: it starts from rest at t = 0 from a point x = 0 and comes to rest at t = 1 at a point x = 1. No other information is available about its motion for the intermediate time (0 < t < 1). If α denotes the instantaneous acceleration of the particle then(a) α cannot remain positive for all t in the interval 0 ≤ t ≤ 1 (b) |α| cannot exceed 2 at any point in its path (c) |α| must be ≥ 4 at some point or points in its path (d) α must change sign during the motion, but no other assertion can be made with the information given |
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Answer» Correct Answer is: (a ,c) |
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