When the two objects have equal masses and equal but opposite velocities, what is the final motion of the two objects? Why

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

i think the answer would be b

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

because if the tool that you are using is not balanced it there would be false mass.