Question

a particle is moving displacement s covered by paticle in t sec is given by s= t×t +5t+10 (a) find the velocity during 5 to 10 sec and at 3sec​

Answer 1

Answer:

velocity at 3rd second =

Explanation:

differntiate the eqn w.r.t 't'

ds/dt = 2t+5

at t = 3 , v = ds/dt = 2t+5

2(3)+5

6+5

11m/s

velocity at 3rd sec = 11m/s

I don't know the other part of the question

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