Both the astronaut accelerating back toward the space shuttle
and the piece of space
equipment accelerating away
from the astronaut are

A) reactions.
B) results.
C) actions.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.