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Physics 9 Online
OpenStudy (anonymous):

a falling stone takes 0.30s to travel past a window 2.2m tall. (a) from what height above the top of the window did the stone fall? (b) this was a second floor window, and the stone was dropped from the roof. How many floors tall is the building? (c) what are the signs of the stone's velocity and acceleration as the stone passes the window?

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