U will be marked as brainlest if u solve this!! Plz help!
I need answers from 3 to 6

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Explanation:

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here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

b.transmitters send radio waves, and receivers capture radio waves.