A model rocket's height above the ground in \((meters)\) after \(t\) \(seconds\) is given by the polynomial \(h(t)\) \(=\) \(-t^{2}+5t+6\). The rocket is launched from a platform \(10\) \(meters\) high, and the company wants to analyze its maximum height and the time it takes to return to the ground to improve future designs.
1. What is the height of the rocket at \(t=2\) \(seconds\)?
2. What is the height of the rocket at \(t=0\) \(seconds\)?
3. What is the height of the rocket at \(t=1\) \(second\) ?
4. Find the height \(t=3\) \(seconds\)?