Answer:
Step-by-step explanation:
The horizontal distance traveled by the projectile is given by the formula

The formula for the time of flight is given by

Case I: when the launch angle is 30°
So,


Horizontal velocity = u Cos 30 = 0.866 u

Case II: when the launch angle is 60°


Horizontal velocity = u Cos 60 = 0.5 u

By observing the case I and case II, we conclude that
R1 = R2
Horizontal velocity 1 > Horizontal velocity 2
T1 < T2