Question

A particle is moving along a coordinates line such that its position at any time T is given by X equal to cube of t minus 18 into t+ 11 find its speed velocity and acceleration when t equal to one

Answer 1

velocity = dx/dt = 3t^2 -18

put t = 1

3-18
-15t



acceleration = d(dv/dt)/dt = 6t
put t=1
6