Two boats start together and race across a 62 km wide lake andback. Boat A goes
ID: 1758982 • Letter: T
Question
Two boats start together and race across a 62 km wide lake andback. Boat A goes across at 62 km/h and returns at 62 km/h. Boat Bgoes across at 31 km/h, and its crew, realizing how far behind itis getting, returns at 93 km/h. turn around times are negligible,and the boat that completes the round-trip first wins. Which boat wins and by how much? (or is it a tie?) A) By how much? answer in km B)What is the average velocity of the winning boat? answer inkm/h Two boats start together and race across a 62 km wide lake andback. Boat A goes across at 62 km/h and returns at 62 km/h. Boat Bgoes across at 31 km/h, and its crew, realizing how far behind itis getting, returns at 93 km/h. turn around times are negligible,and the boat that completes the round-trip first wins. Which boat wins and by how much? (or is it a tie?) A) By how much? answer in km B)What is the average velocity of the winning boat? answer inkm/hExplanation / Answer
Boat A wins! It takes boat A 2 hours. In two hours boat B is only half way done. So boat B is 62 kmbehind at that point. Average speed of winning boat is of course 62 km/hr
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