Starting from rest at a dock, a motor boat on a lake heads
Chapter , Problem 53(choose chapter or problem)
Starting from rest at a dock, a motor boat on a lake heads north while gaining speed at a constant 3.0 m/s2 for 20 s. The boat then heads west and continues for 10 s at the speed that it had at 20 s. (a) What is the average velocity of the boat during the 30-s trip? (b) What is the average acceleration of the boat during the 30-s trip? (c) What is the displacement of the boat during the 30-s trip?
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