Spaceship 1 and Spaceship 2 have equal masses of 150 kg Spaceship 1 has an initial momentum magnitude of 900 kg m s What is its initial speed?

Answer 1

Momentum = (mass) x (speed)

At the moment when the momentum of Spaceship-1 is 900 kg-m/s,

900 kg-m/s = (150kg) x (its speed).

Divide each side by (150 kg): Its speed = (900 kg-m/s / 150 kg) = 6 m/s .

If its speed changes, then its momentum also changes.

We don't need to know anything about Spaceship-2 in order to answer this question.
We don't even need to know that is exists. We suspect that there were originally one
or more additional parts to the question, which became separated from it and drifted away.

Answer 2

Answer: 6 metres per second.

Answer: Since momentum = velocity x mass, just divide the momentum by the mass. The mass for spaceship #2 is irrelevant for this problem.

Answer 3

6 m/s