A projectile was launched from the ground at an unknown angle. The initial vertical component of the velocity was 2.0 m/s. If the projectile's displacement from the time it was launched until the time it hit the ground was 4.0 m, what was its initial horizontal velocity?

Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?