Footballer (soccer) Ronaldo fires a shot on goal from 18 m away. It strikes the crossbar (the top of the goal) 2.4 m above the ground 0.7 s later having only a horizontal component of velocity. What is the magnitude of the velocity at which the ball is kicked?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.