A Catapult Is Tested by Roman Legionnaires

Multiple Choice

A catapult is tested by Roman legionnaires. They tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units) : Range = 0.20 km; angle of launch = π/4; landing height = launch height. What is the initial velocity of launch of the boulders if air resistance is negligible?

A) 44 m/s
B) 1.4 m/s
C) 22 m/s
D) 0.69 m/s