Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 3.0 x 104 kg (about 30 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of <0, 25, 0 km/s. As you pass the location < 5, 5, 0 km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of < 8.0 x 105, 0, 0> N for 20 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?) Additional Materials eBook m
Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 3.0 x 104 kg (about 30 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of <0, 25, 0 km/s. As you pass the location < 5, 5, 0 km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of < 8.0 x 105, 0, 0> N for 20 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?) Additional Materials eBook m
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 49PQ: A block with mass m1 hangs from a rope that is extended over an ideal pulley and attached to a...
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