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The position of a particle moving in a straight line along x-axis varies with time as m, where is in seconds. The distance covered by the particle in the first 5 seconds is:1) 33m2) 15m3) 45m4) 39 |
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Answer» Answer ⇒ Hence, option (b). is correct. Explanation ⇒ x = 12T - 3t² At time t = 0 seconds, x = 0 At time t = 5 seconds, x = 12 × 5 - 3 × 5² x = 60 - 75 ∴ x = -15 Thus, DISTANCE is 15 m in negative direction of x - axis. Hence, option (b). is correct. Hope it helps. |
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