1.

The displacement x of an object is given as a funstion of time, `x=2t+3t^(2)`. The instantaneous velocity of the object at t = 2 s isA. `16 ms^(-1)`B. `14 ms^(-1)`C. `10 ms^(-1)`D. `12 ms^(-1)`

Answer» Correct Answer - B
`x=2t+3t^(2)`
`upsilon=(dx)/(dt)=2+6t`
For `t=2s, upsilon=2+6(2)=14m//s`


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