Both of them are Heterogeneous mixtures. They can both be separated into their compounds, but not down to the element.

**Answer:**

**h = 67.081 m**

**Explanation:**

Given that,

The time taken by a person to fall down is, t = 2.2 s

The height of the cliff from the ground, h = ?

The distance that the person will fall through the time is given by the formula

** S = 1/2 gt² m**

Where,

g - acceleration due to gravity

Substituting the values in the above equation

S = 1/2 x 9.8 m/s² x (3.7 s)²

= 67.081 m

**Therefore, the height of the cliff from the ground is, h = 67.081 m**

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