A transverse wave on a string traveling at a speed of $450\frac{m}{s}$ has a wavelength of $0\mathrm{.}5m$ and

an amplitude of $0\mathrm{.}40cm.$ What is the maximum speed and the maximum acceleration of a

point on the string? $($Ans$.22\mathrm{.}6\frac{m}{s}$;$1\mathrm{.}3{10}^5\frac{m}{s^2})$