Question Description

Eyjafjnallajokull is a volcano in Iceland

During a recent eruption, the volcano spewed out copious amounts of ash.

One small piece of ash was ejected from the volcano with an initial velocity of 336ft/sec.

The Heigh H, in feet, of the ash projectile is given by the equation: H=-16t^2 +336t where y is the time in seconds

The graph of this equation will be parabola

We will assume that the volcano has no height H=0 at t=0

1) When dose the ash projectile reach its maximum height?

2) What is its maximum height?

3) When dose the ash projectile return to the ground?