A child on a spinning playground ride is 0 point 3 6 m from the center of the ride. The centripetal force on the child is 19 cap n What is the mass of the child if the child has a tangential speed of 0 point 5 4 m/s ?

Centripetal force is given by F = mv²/r, so solve for mass: m = Fr/v². Substituting the values gives m = (19 N)(0.36 m)/(0.54 m/s)² ≈ 23.5 kg. This is closest to choice A, 23 kilograms.

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