x(t)=0dxdt=0d2xdt2=0012345678910020406080100x(t)=5tdxdt=5d2xdt2=0050100150200250300350400450020406080s(t)=t2dsdx=2td2sdx2=201,0002,0003,0004,0005,0006,0007,0008,0009,000020406080