Conservation of momentum astronauts question

In summary, two astronauts are playing catch with a third outside their spaceship. All astronauts have the same weight and strength. The first throws the second and the game begins. The motion of the astronauts will be governed by the conservation of momentum (mass * velocity) within the system. Initially, none of the astronauts are moving, so after the first throw, the third astronaut will be moving with the same momentum as the second. The game will last for an indefinite amount of time as long as the two astronauts continue to throw the third back and forth.
  • #1
cali_sk8er205
7
0
Suppose there are three astronauts outside their spaceship and that two of them decide to play catch with the third. This means the first two astronauts are attempting to throw the third back and forth. All astronauts weigh the same on Earth and are equally strong. The first throws the second and the game begins. Describe the motion of the astronauts as the game proceeds. How long will the game last (i.e. how many throws) ?
 
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  • #2
It would help to show what you've tried so far,

We know that momentum is conserved (mass * velocity) within a system. Initially I assume that none of the astronauts are moving. What does this tell you about the motion of the astronauts after the first throw?
 
  • #3
Rake-MC said:
It would help to show what you've tried so far

https://www.physicsforums.com/showthread.php?t=268214

(Reposting the same question without showing any work, having been asked to show some work, by the looks of it.)
 

1. How does conservation of momentum apply to astronauts in space?

Conservation of momentum states that the total momentum of a closed system remains constant. In space, an astronaut's momentum is affected by their mass and velocity, and any changes in these factors will result in a corresponding change in their momentum.

2. What role does Newton's Third Law play in conservation of momentum for astronauts?

Newton's Third Law states that for every action, there is an equal and opposite reaction. In the context of conservation of momentum, this means that any change in momentum for an astronaut will result in an equal and opposite change in the momentum of their surroundings, such as their spacecraft or other objects they come into contact with.

3. How does conservation of momentum impact the movement of astronauts in space?

Conservation of momentum determines the overall movement and velocity of astronauts in space. Any changes in their momentum, whether from movement, collisions, or other forces, will affect their trajectory and require adjustments in their movements.

4. Can conservation of momentum cause problems for astronauts in space?

Conservation of momentum is a fundamental law of physics that applies to all objects, including astronauts in space. While it may present challenges, such as needing to use propellant to adjust their momentum, it also allows for the accurate prediction and control of their movements and interactions with their environment.

5. How does conservation of momentum apply to spacecraft maneuvers performed by astronauts?

Conservation of momentum plays a crucial role in spacecraft maneuvers, such as docking or changing orbits, performed by astronauts. By carefully managing their momentum and using precise calculations, astronauts can make controlled and accurate movements in space.

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