JEE Main Physics question

Physics Motion in a Straight Line JEE Main

A particle moves along a straight line such that its position at any time is , where is in metre and is in second. Then

(A)At the acceleration is 12 ms
(B)The – curve has a maximum at s
(C)Both (A) and (B) are wrong
(D)Both (A) and (B) are correctCorrect

Answer: (D)

Solution

, . At : ms — statement (A) is true. when or

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Question ID VK-151914