When two forces act on the same object in the same direction, the net force is always less than the individual forces.

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

It is really hard for me right know

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two