Which statement about convection in the Earth's mantle is true? A.
Convection contributes to the movement of the Earth's tectonic plates.
B.
Convection continuously cycles matter between the Earth's core and its crust.
C.
Convection causes the Earth's crust to be warmer than it otherwise would be.
D.
all of these

All of these

Explanation:

Mantle convection causes tectonic plates to move around and passes heat on the earth surface in forms of lava and magma.

Hope it helps!

Option B, 11 m is the correct answer.

Explanation:

We have equation of motion , , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

In this case u = 0 m/s , t = 1.5 seconds , a = acceleration due to gravity = , we need to find displacement

Substituting

So option B, 11 m is the correct answer.