Use the scenario to answer the question. A student creates a diagram comparing the sizes of objects in the solar system. Which two objects are often similar in size? (1 point)
comets and planets,
asteroids and comets,
planets and meteors,
moons and meteors

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?