An 8.32 kg mass moving east at 14.8 m/s on a frictionless horizontal surface collides with a 11.3 kg mass that is initially at rest. After the collision, the 8.32 kg mass moves south at 2.73 m/s. What is the magnitude of the velocity of the 11.3 kg mass after the collision

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?