Ariver is flowing at 3.6 m/s. A boy in a tube is floating the river downstream. If the boy can use his arms to paddle at 1.7 m/s with the current, how fast will it appear he is moving to anyone on
the riverbank?

The total speed is 5.3 m/s

Explanation:

The speed of river = 3.6 m/s

The speed of the tube that a boy use for downstream = 1.7 m/s

Now we have to find the total speed of the boy in the case of downstream. However, in this case, the total speed can be determined by adding both the given speeds.

The total speed = Speed of rive + speed of the tube

Total speed = 3.6 + 1.7

Total speed = 5.3 m/s

the inner core.

good luck: )

klicker

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.