A remote-controlled plane has a mass of 0 point 3 8 6 kilograms and flies in a circle with a radius of 75 m The centripetal force on the plane is 4 point 0 cap n What is the tangential speed of the plane?

Centripetal force is related to tangential speed by F = mv²/r, so v = √(Fr/m). Substituting F = 4.0 N, r = 75 m, and m = 0.386 kg gives v = √[(4.0 × 75)/0.386] ≈ 27.9 m/s. The closest choice is 28 m/s.

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