In his 1865 science fiction novel From the Earth to
Chapter , Problem 96(choose chapter or problem)
In his 1865 science fiction novel From the Earth to theMoon, Jules Verne described how three astronauts are shot to theMoon by means of a huge gun. According to Verne, the aluminumcapsule containing the astronauts isaccelerated by ignition ofnitrocellulose to a speed of 11 km/s along the gun barrels length of 220 m. (a) In g units, what is the average acceleration of the capsule and astronauts in the gun barrel? (b) Is that acceleration tolerable or deadly to the astronauts? A modern version of such gun-launched spacecraft (although without passengers) has been proposed. In this modern version, called the SHARP (Super High Altitude Research Project) gun, ignition of methane and air shoves a piston along the guns tube, compressing hydrogen gas that then launches a rocket. During this launch, the rocket moves 3.5 km and reaches a speed of 7.0 km/s. Once launched, the rocket can be fired to gain additional speed. (c) In g units, what would be the average acceleration of the rocket within the launcher? (d) How much additional speed is needed (via the rocket engine) if the rocket is to orbit Earth at an altitude of 700 km?
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