This image shows how magma moves through the Earth's
mantle
Which describes why the magma moves in the direction of
the arrows?
Crust
Mantle
The magma is cooled and becomes more dense by the
core moving it toward the crust.
The magma is heated and becomes more dense by the
core moig it toward the crust.
The magma is cooled and becomes less dense by the
core moving it toward the crust.
The magma is heated and becomes less dense by the
core moving it toward the crust.
Outer core
Inner core

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s