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OpenStudy (anonymous):
abase ballisthrown vertivaly upward with velocty20m/s.find 1)maximuheigh timetakatoreachmaximum
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OpenStudy (anonymous):
h=(v^2) / 2g h=20m use v2=u2-2gh [u=0] then calculate h
OpenStudy (anonymous):
t=sqrt (2h/g) t=4secs
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