Question: Two tractor trailers, each (16 mathrm{~m}) long and (4.0 mathrm{~m}) tall, are parked next to each other as shown in Figure P18.70. A light wind

Two tractor trailers, each $16 \mathrm{~m}$ long and $4.0 \mathrm{~m}$ tall, are parked next to each other as shown in Figure P18.70. A light wind that is blowing at $5.0 \mathrm{~m} / \mathrm{s}$ in the parking lot but at $20 \mathrm{~m} / \mathrm{s}$ between the trailers causes the air pressure between them to drop. What is the magnitude of the force exerted by the air on each trailer? (Use $1.0 \mathrm{~kg} / \mathrm{m}^{3}$ for the air mass density.)

Data from Figure P18.70

top view 5.0 m/s 20 m/s

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