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K=1/2mv^2

m=8,000lb x 0.0310809502 lbs/slug = 248.64slugs

v = 5m/hr x 5280ft/mile x 1hr/60min x 1min/60sec = 7.33 ft/sec

K=0.5 * 248.64slugs * 7.33^2

K= 6,680 ftlbs

where F=K/d and d=1ft

F= 6680Newtons and 1 newton = 0.224808943 pounds force

so F= 1501.7 lbs

If someone could verify this that would be very much appreciated