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A projectile is launched at a speed of 39.1m/s and an angle of 25˚ above the...

A projectile is launched at a speed of 39.1m/s and an angle of 25˚ above the horizontal surface so that it lands on a target 120 m away. Neglect air resistance. The projectile is in the air for 3.4s.

Someone constructs a wall between the launch site and the target that is just high enough to block the projectile's path. If the launch speed cannot be changed, at what angle could we launch the projectile to ensure that it still reaches the target?

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