HW08.1 - A cyclist coasts down a hill that can be
approximated by y=20cos((\pi )/(20)x)m, where the
arguments of cosine are in radians. At the position
shown, the cyclist has a speed of 3(m)/(s), which is
increasing at 1.6(m)/(s)()/(s). Draw the acceleration
diagram, including the direction and magnitudes of
the acceleration components.