How does the total momentum of the docked vehicle and station compare to the momentum of each object before the
docking maneuver?
greater momentum
same momentum
less momentum
( b same momentum ) on ed2020

The total momentum before the docking maneuver is  and after the docking maneuver is

Explanation:

Linear momentum  (generally just called momentum) is defined as mass in motion and is given by the following equation:  

Where  is the mass of the object and  its velocity.

According to the conservation of momentum law:

"If two objects or bodies are in a closed system and both collide, the total momentum of these two objects before the collision  will be the same as the total momentum of these same two objects after the collision ".

This means, that although the momentum of each object may change after the collision, the total momentum of the system does not change.

Now, the docking of a space vehicle with the space station is an inelastic collision, which means both objects remain together after the collision.

Hence, the initial momentum is:

Where:

is the mass of the vehicle

is the velocity of th vehicle

is the mass of the space station

is the velocity of the space station

And the final momentum is:

Where:

is the velocity of the vehicle and space station docked

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