Two students, standing on skateboards, are initially at rest, when they give each other a shove! After the shove, one student (78kg) moves to the left at 6.1m/s while the other student (57kg) moves right.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

where’s the list ? the question is incomplete

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.