Question

The displacement of a body is given by the equation xt is equal to 3tsquare + 2t metre its velocity at t is equal to 2 second

Answer 1

Answer:

14 m/s

Explanation:

x = 3t² + 2t m

We know that

(Inst.)Velocity V = dx/dt (Differentiate the displacement w.r.t time)

∴V (at t =  2 seconds) = d(3t² + 2t)/dt

                                   = 3(2t) +2   = 6t + 2 = 6(2) + 2 = 14 m/s