Nitrocellulose to a speed of 11 km/s along the gun barrel’s 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 gun’s 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?