Question

find displacement travel by object b/w 2sec to 4sec if velocity=2t +3





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Answer 1

Answer:

Good question

Explanation:

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Answer 2

Answer:

18m (assuming the displacement of the object at t=0 is 0)

Explanation:

Velocity is the first derivative of displacement.

    ie; ds/dt=2t+3.

Hence,

         ds=2tdt + 3dt => s=t^2+3t+c. if s=0 at t=0 => c=0.

Hence, s(t)=t^2+3t.

To find displacement between t=2 and t=4, required result = s(4)-s(2)

  = 16+12-4-6=18