Can an object have momentum in space?

Answer 1

Yes. Momentum is based entirely upon mass and velocity, as shown by the equation p=mv, where p is momentum, m is mass, and v is velocity. Since an object can still have both mass and velocity in space, it can have momentum in space.

Answer 2

Not unless it is hit or collides with another object during travel. As a spaceship burns fuel its mass is reduced. Burning fuel would normally increase velocity (acceleration) unless the fuel expended offsets some gravitational pull.

A spacecraft might also eject a spent rocket stage or cargo, thus reducing its mass. Another spacecraft might match velocity with it, and attach itself with magnetic grappling hooks or whatever.

Velocity is a vector, so any change in direction represents an acceleration. A collision with another object should result in a change in velocity.

Answer 3

Yes, an object can have momentum in space. Momentum is a property of an object that depends on its mass and velocity, and it remains the same regardless of the object's location in space. In the vacuum of space, where there is no air resistance or other external forces, an object's momentum will be conserved unless acted upon by another force.