Ironman, a genius in a robotic suit with a total mass of 915.8 kg, flies forward horizontally at a speed of 49.6 m/s into a spaceship that is floating at rest in outer space. Upon landing on the ship, the spaceship and Ironman moved with a velocity of 2.8 m/s forward. Calculate the spaceship’s mass in kilograms.

Ironman, a genius in a robotic suit with a total mass of 915.8 kg, flies forward horizontally at a speed of 49.6 m/s into a spaceship that is floating at rest in outer space. Upon landing on the ship, the spaceship and Ironman moved with a velocity of 2.8 m/s forward. Calculate the spaceship’s mass in kilograms.