Question

the zero gravity research facility at nasa-operated glenn research center in ohio is used to test the behavior of fluids, flames, equipment and other objects in free fall. it consists of a 467-foot long, 12-foot diameter, steel vacuum chamber. the steel chamber resides inside of a concrete lined shaft which extends 510 feet below ground level. objects falling through the tower experience free fall over a distance of 130 meters (426 feet) before being brought to a halt. a. Determine the falling time for objects dropped from rest. Info b. Determine the final speed of the objects before the braking period begins. Final Speed Info

Answer 1

The falling time for objects dropped from rest is 5.19 s. The final speed of the objects before the braking period begins is 50.9 m/s.

s = ut + - 1/2at²

(d) = (0m/s)t+1/2(g)t²

(-132 m) =

(-9.81 m/s² )T\t²

t = 5.19 s

v = u+ at

v = (0 m/s) +(g)t

v = (-9.81 m/s2 ) (5.19 s)

v=-50.91 m/s

The speed of an item, which is a scalar number in daily use and kinematics, is the size of the change in that object's position over time or the size of  change in that object's position .

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