A projectile is launched at an angle of 40 degrees and lands…

A projectile is launched at an angle of 40 degrees and lands 22 s later at the same height as it was launched. (a) What is the initial speed of the projectile? (b) What is the maximum altitude? (c) What is the range? (d) Calculate the displacement from the point of launch to the position on its trajectory at 15 s.