The v-2 rocket that was used to attack london in world war ii had an initial mass of 12850 kg, of which 68.5% was fuel. This fuel burned uniformly for 70 seconds with an exhaust velocity of 2 km/s. Assume it encounters air resistance of 1.45 n per m/s of velocity. Then find the velocity and altitude of the v-2 at burnout under the assumption that it is launched upward from rest on the ground.
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The V-2 with the technical name Aggregat 4 (A4), was the world's first long-range guided ballistic missile. The missile, powered by a liquid-propellant rocket engine, was developed during the Second World War in Germany as a "vengeance weapon" and assigned to attack .By the end of 1934, his group had successfully launched two rockets
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