Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 4.0 x 10 kg (about 40 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of <0, 22,0 km/s. As you pass the location < 6, 9, 0 km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of < 6.0 x 105, 0, 0> N for 22.5 s. The ejected gases have a mass that is small compared to the mass of the spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about what approximations or simplifying assumptions you made in your analysis. Also think about the choice of system: what are the surroundings that exert external forces on your system?) 74= m

Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 4.0 x 10 kg (about 40 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of <0, 22,0 km/s. As you pass the location < 6, 9, 0 km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of < 6.0 x 105, 0, 0> N for 22.5 s. The ejected gases have a mass that is small compared to the mass of the spacecraft. You then continue coasting with the rocket engines turned off. Where are you an hour later? (Think about what approximations or simplifying assumptions you made in your analysis. Also think about the choice of system: what are the surroundings that exert external forces on your system?) 74= m

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.3: Relative Velocity

Problem 27PP

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