Michael J. answered 09/30/15
Tutor
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Effective High School STEM Tutor & CUNY Math Peer Leader
This is a question about vectors because we have an angle. Since we want the height, we multiply the speed by time. This is based on the formula
v = d / t
Height indicates vertical component, so the height will be
h = t * 80sin(60)
where:
h = height
t = time