Suppose a model rocket is shot from the ground straight up w

Suppose a model rocket is shot from the ground straight up with a initial velovity is 60ft/sec and the h=-16t^2+60t how long will it take to reach maximum height?

gravitational acceleration is 32ft/sec^2
this means that for every second of flight, the velocity decreases 32ft/sec

the time to max height (zero velocity) is (60ft/sec)/(32ft/sec^2) or 1.875sec