PHYSICS
posted by kate .
Zach, whose mass is 67 kg, is in an elevator descending at 12 m/s. The elevator takes 3.5 s to brake to a stop at the first floor.
(a) What is Zach's apparent weight before the elevator starts braking?
(b) What is Zach's apparent weight while the elevator is braking?

PHYSICS 
bobpursley
a) weight= mg+ma=m(g+0)
b) weight= m(g+12/3.5)
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