Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 2.5 104 kg (about 25 tons). The rocket engines are shut off, and you're coasting along with a constant velocity of ‹ 0, 31, 0 › km/s. As you pass the location ‹ 6, 4, 0 › km you briefly fire side thruster rockets, so that your spacecraft experiences a net force of ‹ 4.0 105, 0, 0 › N for 19 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?)
Answers: 3
Physics, 22.06.2019 10:00, Trinhphuongtran
One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?
Answers: 2
Physics, 22.06.2019 13:10, alejandramirand9836
A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)
Answers: 3
Physics, 22.06.2019 15:30, hotsaucerman567
What is a subatomic particle with a negative charge and very little mass?
Answers: 1
Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 2.5 10...
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