Understanding Momentum

* Momentum: A measure of an object's mass in motion. It's calculated by:

* Momentum (p) = mass (m) × velocity (v)

The Problem

You've given us:

* Mass (m): 300 kg for both spaceships.

* Initial Momentum (p): 600 kg-m/s

Finding Velocity

Since we know momentum and mass, we can find the initial velocity of each spaceship:

* v = p / m

* v = 600 kg-m/s / 300 kg

* v = 2 m/s

Important Note: You haven't specified a direction for the momentum. Therefore, we're assuming both spaceships are initially moving in the same direction with a speed of 2 m/s.

Summary

Both spaceships have an initial velocity of 2 m/s.