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Sagot :
Answer:
Maximum height = 93005 m
The total time of flight = 294 s
Explanation:
The height during the burning:
s = ut + 0.5at^2
s = 0.5 x 34 x 35^2
s = 20825 m
End speed during the burn.
v = u + at = at
v = 34 x 35
v = 1190 m/s
It rises till the speed is zero:
v = u + at
t = (v - u)/a
t = -1190/-9.81
t = 121.3048 s
Maximum height = 20825 + 1190 x 121.308 - 0.5 x 9.81 x 121.3048^2 = Maximum height = 93005 m
Time taken to fall from height
s = 0.5at^2
t^2 = 2s/a
time = SQRT(2s/a) =
time = SQRT(2 x 93005/9.81)
Time = 137.7 s
Therefore the total time of flight = 35 +121.3048 + 137.7
Therefore the total time of flight = 294 s
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