The lake is the reference point at zero. Your house is 2 kilometers west of the lake. Suppose you started at your house and rode your bike to the lake. From there, you went to a friend's house which is 8 kilometers east of the lake. The trip took 2 hours. Calculate your average velocity.

Average velocity = 5 km/h

Explanation:

Given:

Distance from house to lake = 2 km

Distance from lake to friend's house = 8 km

Total time taken = 2 hours

Find:

Average velocity

Computation:

Total distance = Distance from house to lake + Distance from lake to friend's house

Total distance = 2 km + 8 km

Total distance = 10 km

Average velocity = Total distance / Total time taken

Average velocity = 10 / 2

Average velocity = 5 km/h

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.