(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A child accidentally drops her doll from a bridge suspended 50m above a fast moving river. Assuming the doll never reaches terminal velocity, how many seconds will it take for the doll to hit the water?

2. Relevant equations

x=x_{0}+ v_{0}t + 0.5*at^{2}

3. The attempt at a solution

Using acceleration formula:x=x_{0}+ v_{0}t + 0.5*at^{2}

It should be0=(50M)+(0m/s)t+0.5*(-9.8m/s^{2})

Which would give me3.194382825seconds. The textbook's answer is2.3s. So after a bit of exploration I realized that the acceleration isn't supposed to be halved. That brings me to the question why isn't the acceleration halved like the example and other questions using the formula?

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# Homework Help: Calculating Time, Where Did I Go Wrong?

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