Me! i don't understand this! due todayas a part of an engineering contest, a student who has designed a protective crate for an egg drops a crate from a window 18 ft above the ground. the height (in feet) of the crate as it falls is given by h(t)=-16t^2+18, where t is the time (in seconds) since the crate was dropped. write and solve an equation to find the amount of time before the crate passes a window of 10 ft directly below the window from which the crate was dropped. write and solve an equation to find the amount of time before the crate hits the ground. is the rate at which the crate falls constant? explain.