3. Two spherical objects at the same altitude move with identical velocities and experience the same drag force at a time t. If Object 1 has twice (2x) the diameter of Object 2, which object has the larger drag coefficient? Explain your answer using the drag equation.

Object 2 has the larger drag coefficient

Explanation:

The drag force, D, is given by the equation:

Object 1 has twice the diameter of object 2.

If

Area of object 2,

Area of object 1:

Since all other parameters are still the same except the drag coefficient:

For object 1:

For object 2:

Since the drag force for the two objects are the same:

Obviously from the equation above, c₂ is larger than c₁, this means that object 2 has the larger drag coefficient

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