During a Recent Thunderstorm the Wind Was Blowing Past Your

question 30

Multiple Choice

During a recent thunderstorm the wind was blowing past your roof at 40 m/s (90 miles/hour) .Assuming that the density of air is 1.20 kg/m³,the size of the roof is 10 m by 15 m,and the air under the roof was at rest,the net force experienced by the roof was

• A)288 kN.
• B)144 kN.
• C)89 kN.
• D)75 kN.
• E)61 kN.

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Definitions:

Elastic Stockings

Specially designed hosiery that applies graduated pressure to the legs to improve blood circulation and prevent venous disorders.

Dorsiflex Foot

The action of raising the foot upwards towards the shin, a movement important in walking and balancing.

Body Alignment

The optimal placement of body parts so that the bones and muscles work efficiently, reducing strain and enhancing physical health.

Musculoskeletal System

The organ system that enables humans to move using the muscular and skeletal systems, including bones, muscles, tendons, ligaments, and cartilage.