Question:
A ball dropped from a bridge hits the surface of the water in 3 π . The height of the bridge, ignoring air resistance, is ___ π (rounded off to one decimal place). (Use $π = 9.8 ππ ^{β2}$)
A ball dropped from a bridge hits the surface of the water in 3 π . The height of the bridge, ignoring air resistance, is ___ π (rounded off to one decimal place). (Use $π = 9.8 ππ ^{β2}$)
Updated On: Feb 2, 2025
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Correct Answer: 44.1
Solution and Explanation
Using the equation of motion:
\( s = \frac{1}{2}gt^2, \)
substitute \(g = 9.8\) m/s2 and \(t = 3\) s:
\( s = \frac{1}{2} \times 9.8 \times (3)^2 = 44.1 \text{ m}. \)
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