Disregarding air resistance, what is the speed of a ball dropped from 12 feet just before it hits the ground? (Use 1 foot is equal to 0 point 3 0 m , and use g is equal to 9 point 8 the fraction with numerator m and denominator s squared )

Convert the height to meters: 12 feet × 0.30 meters per foot = 3.6 meters. For an object dropped from rest, its speed just before impact is v = √(2gh) = √(2 × 9.8 × 3.6) = 8.4 meters per second, so the correct choice is 8.4 meters per second.

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