PLEASE HELP QUICK I NEED IT TO PASS Two maps have similar areas. The contour lines have the same spacing, but the land they represent is very different. One of them has a steep mountain, and the other is a gradual hill. How will the maps be different?

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?