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Question: a rocket is fired vertically up from rest if it...

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A rocket is fired vertically up from rest. If it is designed to ma upward acceleration of 1.5g, calculate the altitude of 30km and its velocity at that position. maintain a constant time required for it to reach an
A hollow marine propeller shaft turning at 290 rev/min is required to propel a vessel at 32 knots for the expenditure of 15.3 MW shaft power, with the efficiency of the propeller being 80%. The diameter ratio of the shaft is to be,5 and the direct stress due to thrust is not to exceed 15 MN/m2. Calculate - o.6 a. The shaft diameters, and b. The maximum shearing stress due to the torque E-30.1- Take 1 knot0.518 m/s
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