Sep 09, 2007 · You can safely assume that there is no significant deviation of the spacecraft from its original path with its original velocity during this time. (e) Using your result from part (d), make a rough estimate of how far off course the spacecraft would be after 4 days. Homework Equations density=mass/volume Fgrav= -G*[(m1m2)/(r)^2] f=mg deltap=Fnet ...
Aug 03, 2016 · A rocket takes off from Earth and reaches a speed of 100 m/s in 10.0 s. If the exhaust speed is 1500 m/s and the mass of fuel burned is 100 kg, what was the initial mass of the rocket? Repeat the preceding problem but for a rocket that takes off from a space station, where there is no gravity other than the negligible gravity due to the space ...
A rocket takes off from Earth and reaches a speed of 100 m/s in 10.0 s. If the exhaust speed is 1500 m/s and the mass of fuel burned is 100 kg, what was the initial mass of the rocket? Repeat the preceding problem but for a rocket that takes off from a space station, where there is no gravity other than the negligible gravity due to the space ...
(b) The only difference is now that u′ x = 0.87c. ux = (u′x +v) 1+ vu′x c2 ( 0.87c+0.61c) (1+( 0.87) 0.61) = 0.55c. Speed: 0.55c. Problem Giancoli 36-29 (II) A stick of length l0, at rest in reference …
In rocket problems, the most common questions are finding the change of velocity due to burning some amount of fuel for some amount of time; or to determine the acceleration that results from burning fuel.
A rocket is an example of conservation of momentum where the mass of the system is not constant, since the rocket ejects fuel to provide thrust. The rocket equation gives us the change of velocity that the rocket obtains from burning a mass of fuel that decreases the total rocket mass.
A 65-kg person jumps from the first floor window of a burning building and lands almost vertically on the ground with a horizontal velocity of 3 m/s and vertical velocity of − 9m/s . Upon impact with the ground he is brought to rest in a short time. The force experienced by his feet depends on whether he keeps his knees stiff or bends them. Find the force on his feet in each case.
(a) A 5.00-kg squid initially at rest ejects 0.250 kg of fluid with a velocity of 10.0 m/s. What is the recoil velocity of the squid if the ejection is done in 0.100 s and there is a 5.00- N frictional force opposing the squid’s movement?
Thus, even though the force on the rocket is constant, the resulting acceleration is not; it is continuously increasing. So, the total change of the rocket’s velocity will depend on the amount of mass of fuel that is burned, and that dependence is not linear.