Posted by Jamie on Wednesday, December 12, 2012 at 11:41am.
v = v0 - 1/2*g*t^2
where v is speed as a function of time, v0 is the inital speed, and g is the acceleration due to gravity
v = 24 - 4.9*t^2 = 0
Solve for t
When it returns to its starting point, the time will be 2*t, using t from the first question. Calculate v at this time (It should be 24 m/s)
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