Problem: A heavy rock and a light rock of the same size are falling through the air from a tall building. The one that encounters the greatest air resistance is theA. light rock.B. same for bothC. heavy rock.

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Viscous drag force:

FD=CAρv22 C is the drag coefficient, A is the effective cross-sectional area of the object, ρ is the density of the fluid, and v is the velocity of the object.

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Problem Details

A heavy rock and a light rock of the same size are falling through the air from a tall building. The one that encounters the greatest air resistance is the

A. light rock.

B. same for both

C. heavy rock.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Dynamics with Resistive Forces concept. If you need more Dynamics with Resistive Forces practice, you can also practice Dynamics with Resistive Forces practice problems.