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The displacement of a point moving along...

The displacement of a point moving along a straight line is given by
`s= 4t^(2) + 5t-6`
Here s is in cm and t is in seconds calculate
(i) Initial speed of particle
(ii) Speed at `t = 4s`

Text Solution

Verified by Experts

(i) Speed, `v= (ds)/(dt) = 8t +5` Initial speed (i.e at t=0), `v= 5cm//s`
(ii) At `t = 4s, v= 8(4) + 5 = 37 cm//s`
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