A boat is cruising in a straight line at a constant speed of 2.6 m/s when it is shifted into neutral. After coasting 12 m the engine is engaged again, and the boa t resumes cruising at the reduced constant speed of 1.6 m/s. Assuming constant acceleration while coasting, (a) how long did it take for the boat to coast the 12 m? (b) What was the boat’s acceleration while it was coasting? (c) When the boat had coasted for 6.0 m, was its speed 2.1 m/s, more than 2.1 m/s, or less than 2.1 m/s? Explain.
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