A cannonball is launched from a point 100 m above ground, at a speed of 20 m/s. This is modelled by the equation $h(t)=-4.9t^2 +20t +100$
The speed of sound (of the cannonball is) 380m/s
If a person sitting directly underneath the cannonball runs as soon as they hear the sound do they escape the cannon?
My main question is "$y=-380x+100$" the correct equation to model the cannon's sound?