When jumping straight upfrom a crouched position, an average person can reach a maximum heightof about 60 cm. During the jump, the person’s body from the knees uptypically rises a distance of around 50 cm. To keep the calculations simpleand yet get a reasonable result, assume that the entire body rises thismuch during the jump. With what initial speed does the person leave the ground to reach a height of 60 cm?

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When jumping straight up
from a crouched position, an average person can reach a maximum height
of about 60 cm. During the jump, the person’s body from the knees up
typically rises a distance of around 50 cm. To keep the calculations simple
and yet get a reasonable result, assume that the entire body rises this
much during the jump. With what initial speed does the person leave
the ground to reach a height of 60 cm?

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