A speedboat moving at 300ms approaches a no-wake buoy, Ask an Expert

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A speedboat moving at 30.0m/s approaches a no-wake buoy marker 100 m ahead. The pilot slowsthe boat with a constant acceleration of -3.50m/s2 by reducing the throttle.

(a) How long does it take the boat to reach the buoy?

(b) What is the velocity of the boat when it reaches the buoy?

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