<p>I've been stuck on these problems forever and i still can't get it.</p>
<p>1) A boat is cruising at a constant speed of 2.2 m/s when it is shifted into neutral. After coasting 12.0 m the engine is engaged again, and the boat resumes cruising at the reduced speed of 1.6 m/s. How long did it take for the boat to coast the 12.0 m?</p>
<p>2) Landing with a speed of 125 m/s, and traveling due south, a jet comes to rest in 8.00 102 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration.</p>
<p>3) A bicyclist is finishing his repair of a flat tire when a friend rides by at 3.0 m/s. Two seconds later, the bicyclist hops on his bike and accelerates at 2.2 m/s2 until he catches his friend.</p>
<p>any help would be really appreciated</p>