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CBSE Class 11-science Answered

the position of the particle along x-axis varies with time as

x = 4t2 - 6t + 1, then:

(a) What is the velocity at t = 0?

(b) When does velocity become zero?

 

Asked by Masood khan | 15 Jun, 2015, 01:07: PM
answered-by-expert Expert Answer
Given equation: x = 4t2 - 6t + 1
Differentiating the above eqution wrt time, we get:
 
begin mathsize 12px style dx over dt space equals space 8 straight t space minus space 6 Or comma space straight v equals dx over dt space equals space 8 straight t space minus space 6 When space straight t space equals space 0 comma space we space get colon straight v space equals space minus space 6 space straight m divided by straight s When space straight v space equals space 0 comma space we space get colon space 8 straight t space minus space 6 space equals space 0 8 straight t space equals space 6 straight t equals space 6 over 8 space Or comma space straight t space equals space 0.75 space straight s end style
Answered by Yashvanti Jain | 15 Dec, 2017, 03:37: PM

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