I don't know where to begin and I'm lost
The velocity function is given by the derivative of the displacement function.\(v(t)=\dfrac{\mathrm ds(t)}{\mathrm dt}=-\dfrac2{t^3}\)You want to find the velocity at \(t=2.5\), which would be\(v(2.5)=-\dfrac2{2.5^3}=-\dfrac{16}{125}=-0.128\)
