At standard pressure, during which physical change does the kinetic energy of the
particles increase? AKS 5a

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

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

the answer would be   dignified - apex

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