6. If you you apply a force of 30 N to the left to and object and your friend applies a force of 20 N to the right. What is the net force on the object?

it’s 10N

Explanation:So 30N is going left and 20N is going right so you would subtract it because they are going opposite ways if they where going the same why then you would add them.

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.

the answer is 12 as i may remember

: )