What does the author explain in this passage? Question 2 options:

The author explains the importance of bike safety, using helmets as an example.

The author explains the force of friction, using different kinds of music as examples.

The author explains the sport of soccer, using examples of current teams and players.

The author explains the idea of motion, using different sports as examples.

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?