Answer:
169/4 ft/min.
Explanation:
See the attached picture.
Technician B only
a. time is 0.91s
b. height is 4.04m
179.1 kg
D only kinetic energt because if it had heluim or any thing jt will float up
As we know that
here we have
also we know
so we have
so the height above window is given as