Please help I am super confused and I would really really appreciate it thank you♥️ 1) Sketch a model of a monomer call mom a polymer call mom and a cross-linked polymer

2) Explain how your drawn model from question one can predict the behaviors of the substance,
Also I need a picture of the model please upload it I would really appreciate it♥️

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?