Question

от чего отталкиваться космонавту в открытом космосе чтобы изменять скорость,маневрировать?

Answer 1

во первых там гравитация соответственно условия приближены к воде  а как мы движемся в воде также почти движемся и в воздухе

 

Answer 2

Operating in Open Space

To change speed and maneuver in open space, a cosmonaut would need to consider the principles of physics and the environment of space. In open space, a cosmonaut can change speed and maneuver by using propulsion systems, such as thrusters or jetpacks, and by taking advantage of the lack of air resistance.

The lack of air resistance in space means that once an object is set in motion, it will continue moving at a constant speed and in a straight line unless acted upon by an external force. This principle is described by Newton's first law of motion, also known as the law of inertia. Therefore, to change speed and maneuver in open space, a cosmonaut would need to apply a force in the opposite direction to slow down, speed up, or change direction.

Propulsion systems, such as thrusters or jetpacks, are commonly used by cosmonauts to change speed and maneuver in open space. These systems expel mass in one direction, causing the spacecraft or cosmonaut to move in the opposite direction, in accordance with Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

In addition to propulsion systems, cosmonauts can also use tools such as tethers and handrails to maneuver in open space. These tools provide stability and leverage for the cosmonaut to move around and perform tasks outside of the spacecraft.

Conclusion

In conclusion, to change speed and maneuver in open space, a cosmonaut can utilize propulsion systems, take advantage of the lack of air resistance, and use tools for stability and leverage. These methods allow cosmonauts to navigate and perform tasks in the challenging environment of open space.