The displacement of a particle starting from rest (𝑎𝑡 𝑡 = 0) is given by 𝑠 = 6𝑡2 − 𝑡 3 . The time in seconds at which the particle will attain zero velocity again, is

Question : The displacement of a particle starting from rest (𝑎𝑡 𝑡 = 0) is given by 𝑠 = 6𝑡2 − 𝑡 3 . The time in seconds at which the particle will attain zero velocity again, is

(A) 2

(B) 4

(C) 6

(D) 8

Answer : option(B)

Solution :

The displacement of a particle starting from rest (𝑎𝑡 𝑡 = 0) is given by 𝑠 = 6𝑡2 − 𝑡 3 . The time in seconds at which the particle will attain zero velocity again, is
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