Astronaut spaceman floating in outer space looking at the Earth globe planet. reflection of earth view in helmet. science or space travel background

Two spacemen are floating together with zero speed in a gravity-free region of space. The mass of spaceman A is 120 kg and that of spaceman B is 105 kg. Spaceman A pushes B away from him with B attaining a final speed of VB = 0.7 m/s. Find the final recoil speed of spaceman A.The recoil speed, VAUnit: m/s

Watch an Astronaut Float in Liquid Space for 8 Hours