An object was shot up into the air at an initial vertical speed of 480 feet per second. Its height as time passes can be modeled by the quadratic function , where f(t)=−16^2+480. Here represents the number of seconds since the object’s release, and f(t) represents the object’s height in feet. 1) After, this object reached its maximum height of

2) This object flew for before it landed on the ground.

3) This object wasin the air 26 s after its release.

4) This object was 464 ft high at two times: once after its release, and again later___ after its release.