# Given the density of iron as 7800 kg/m 3 , and the Earth radius is 6.38 x 10 6 m, if 55% of the Earth's volume is filled with Iron, and 45% is filled with rocks that has a density of 2600 kg/m 3 , what is the total mass of the Earth?

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Given the density of iron as 7800 kg/m 3 , and the Earth radius is 6.38 x 10 6 m, if 55% of the Earth's volume is filled with Iron, and 45% is filled with rocks that has a density of 2600 kg/m 3 , what is the total mass of the Earth?

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Step 1

Kinematics equation of motion for one dimensional motion with constant acceleration is used to find the distance travelled by the object horizontally. Using this the distance travelled by the shot vertically can be found.

Step 2

Substitute 42 degree for theta, 13.0m/s for u, and 9.8m/s^2 for g in the above equation to find the distance travelled horizontally.

Step 3

The total height will be the sum of the distance travelled hor...

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