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A woman is reported to have fallen 144 ft from the 17th floor of a building, landing on a metal ventilator box that she crushed to a depth of 18.0 in. she suffered only minor injuries. ignoring air resistance, calculate (
a. the speed of the woman just before she collided with the ventilator and (
b. her average acceleration while in contact with the box. (
c. modeling her acceleration as constant, calculate the time interval it took to crush the box.