Part E Research the fossil record of humpback whales and answer these questions: Name at least two extinct species that share a close evolutionary relationship with humpback whales. Explain the similarities and differences that exist between these species and humpback whales. Is the fossil record complete for humpback whales? Explain your answer. Font Sizes Characters used: 0 / 15000

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?