**Challenge Problem:**
An earthquake hits Los Angeles!
A wave ripples down the LA Freeway at a speed of **150 mph**,
with crests **60 m** apart.
Motorists caught by the quake are shaken up and down inside
their cars violently. The road moves so quickly that,
after pushing cars up to a peak height at a crest,
the asphalt almost leaves the tires behind as they fall
into a trough.

Write an equation for this wave of the form

y(x, t) =but provide the numerical values for all constants, in standard SI units.A* sin (k*x -ω*t )