In Exercises 912, refer to a 5-m ladder sliding down a wall, as in Figures 1 and 2. The

Chapter 3, Problem 9

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In Exercises 912, refer to a 5-m ladder sliding down a wall, as in Figures 1 and 2. The variable h is the height of the ladders top at time t, and x is the distance from the wall to the ladders bottom. Assume the bottom slides away from the wall at a rate of 0.8 m/s. Find the velocity of the top of the ladder at t = 2 s if the bottom is 1.5 m from the wall at t = 0 s.

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