An airplane diving at an angle of 57acircdeg with the

Question

Compute each part of given question:

Question: An airplane, diving at an angle of 57° with the vertical, releases a projectile at an altitude of 750 m. The projectile hits the ground 4.48 s after being released.

Part A: What is the speed of the aircraft?

Part B: How far did the projectile travel horizontally during its flight?

Part C: What was the horizontal component of its velocity just before striking the ground?

Please give me an explanation for above question.