Mashaal Masha
A machine launches a softball from ground level. The softball reaches a maximum height of 51.84 meters above the ground at 1.8 seconds and hits the ground at 3.6 seconds. Which equation represents the height above ground $h$, in meters, of the softball $t$ seconds after it is launched?
Difficulty: Hard
A: 

$h=-t^{2}+3.6$

B: 

$h=-t^{2}+51.84$

C: 

$h=-16(t-1.8)^{2}-3.6$

D: 

$h=-16(t-1.8)^{2}+51.84$

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