### Home > CALC > Chapter 4 > Lesson 4.4.1 > Problem 4-127

4-127.

As a log falls in a waterfall, its velocity is in feet per second. The position of the log at time

*was at the top of the waterfall,*

Where is the log after

second? seconds? seconds? You need to find the position function,

.Antidifferentiate

.Solve for

, by evaluating the given point.Check your work:

ftftftWhere is the log after

seconds? This is the position function. What is its relationship to?Refer to the hint in part (a).

Use the eTool below to visualize the problem.

Click the link at right for the full version of the eTool: *Calc 4-127 HW eTool*