Speed is pretty easy to understand. when an object is moving, we make a ratio of how far it
moves with how quickly it moves there. if you walk to a friend's house that is 1 mile away, and it
takes you 30 minutes, you are walking 2 miles per hour.
1. show this mathematically.

the bal will not change its velocity.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

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.

a skateboard rolling across the street - apex