Question 1163809
A rocket beigns from rest and accelerates upward at +0.5m/s^2. 
a) At what time will the rocket reach a height of 1000 m?
h(t) = at^2/2
at^2/2 = 1000
0.5*t^2 = 1000
t^2 = 2000
t = sqrt(2000) seconds
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b) What will be the rocket's velocity at that point?
v = a*t = 0.5*sqrt(2000) m/sec