AP EAMCET · PHYSICS · Motion In One Dimension
The displacement of a particle starting from rest at is given by . The time in seconds at which the particle will attain zero velocity is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
The velocity of particle is, v=dsdt=d9t2-2t3dt=18t-6t2 When particle attains zero velocity, v=18t-6t2=0 18t-6t2=0⇒6t3-t=0⇒t=0 and t=3 Therefore, after 3 s the particle will attain zero velocity.
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