"A plane, diving with constant speed at an angle of 54.0 degrees with the vertical, releases a projectile at an altitude of 770m. The projectile hits the ground 5.00s after release. (assume a coordinate system in which the airplane is moving in the positive horizontal direction, and a negative vertical direction neglect air resistance.)
(A) what is the speed of a aircraft?
__________ M/s
(B) how far did the projectile travel horizontally during its flight?
_________M
(C) what were the horizontal and vertical components of its velocity just before striking the ground?
_____ M/s (horizontal) ______ M/s (vertical)