Basic Biomechanics 6th Edition by Susan Hall

Exercise 8

A ball is kicked a horizontal distance of 45.8 m. If it reaches a maximum height of 24.2 m with a flight time of 4.4 seconds, was the ball kicked at a projection angle less than, greater than, or equal to 45° Provide a rationale for your answer based on the appropriate calculations. (Answer: 45°)