During the Apollo 13 mission, the crew was faced with odds that were not in their favor. They were faced with many uncertainties that would possibly be fatal if they went wrong. It all started when a crew member stirred the o2 tanks, and the tanks burst. With this predicament, they could not possibly land on the moon. Mission Control or "Houston" had to come up with a flawless plan to get the U.S spacemen back to the Earth.
How is free-fall associated in the re-entry of a spacecraft?
Free-fall is arguably the most important aspect of space travel. The free-fall law is put into action during the re-entry of the space craft to Earth. When the spacecraft enters Earth's gravity, it enters the Earth at an angle. Once they get close enough, they start feeling terminal velocity. After falling at 9/8 m/s^2, they reach such a fast speed that the air resistance/friction is so high that a fireball forms around the craft. This is the reason that they need fire-resistant material on the lining of the spacecraft. …show more content…
A part of Newton's first law states that an object maintains its velocity unless it experiences a net force. This is associated because during the re-entry, it seems that gravity and free fall are the only forces acting on the object as it is reentering the atmosphere. It is not. Air resistance and friction are acting on the object as well. You might ask, how can we see friction and air resistance? Well when the fireball forms around the craft, it is due to air resistance and friction. Newton's first law is very much associated with the re-entry of Apollo …show more content…
Newton's 3rd law states that for every action force, there is equal or opposite force. Apollo 13 can be brought up in this conversation, because the first force, gravity, is complimented by a friction such as air resistance.