Well,
The outer core of the Earth is mostly composed of iron and nickel.
The correct option is C.
<span>Kinetic energy increases and potential energy decreases.
</span>
9.8........................
Answer:

Explanation:
Let's use projectile motion equations. First of all we need to find the travel time. So we are going to use the next equation:
(1)
Where:






In this case:

Because the dog jumps horizontally
Let's asume the gravity constant as:


Because when the dog reach the base the height is 0


Now let's replace the data in (1)

Isolating t:

Finally let's find the horizontal displacement using this equation:

Replacing the data:
