According to Newton’s third law of motion, which are equal?

momentum and velocity
collision time and stop time
mass and momentum
action force and reaction force

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

How would a small bar magnet be oriented when placed at position x?