I will answer the ones I know...and hopefully these help!..
1). Gravity makes the object fall towards the ground! It’s the gravitational pull that brings the object back down
These motions have to do with Newton’s third law..
3). I don’t think so but I might be wrong Cuz I think that since Earth has a large mass, it pulls things in towards it but they orbit. Sorry if that’s wrong!
-hope I helped in a way! Wished I coulda answered all of em
Assuming that sound waves travel along a straight line at a constant speed of 346 m/s, we can find the time needed for the sound to travel the distance of 1.9 m between the astronauts, just applying the definition of average velocity, as follows:
The electromagnetic waves travel in free space at the same speed of light in vacuum ( since light is a electromagnetic wave indeed), i.e., 3*10⁸ m/s.
Applying the same formula than in (1) we can solve for the distance d, as follows: