HW$2$B$\mathrm{.}6.$ Particle's acceleration on a curve, graphical

A particle is moving to the left along a variable$-$height ground. The horizontal component of its velocity has magnitude

and is constant. The ground height is given by

$,$ where

is in meters.

Python Inputs:

import numpy as np

from sympy import $*$

x $=$ symbols$(\text{'}$x$\text{'})$

y $=2*$sin$(2*$x$)$

vxMag $=10$

When the particle is at the lowest point on the ground, what is the vertical acceleration

$?$