Two boats start together and race across a 60-km-wide lake and back. Boat A goes across at 30 km/h and returns at 30 km/h. Boat B goes across at 20 km/h, and its crew, realizing how far behind it is getting, returns at 40 km/h. Turnaround times are negligible, and the boat that completes the trip first wins. (a) Which boat wins and by how much? (Or is it a tie?) (b) What is the average velocity of the two boats?
Two boats start together and race across a 60-km-wide lake and back. Boat A goes across at 30 km/h and returns at 30 km/h. Boat B goes across at 20 km/h, and its crew, realizing how far behind it is getting, returns at 40 km/h. Turnaround times are negligible, and the boat that completes the trip first wins. (a) Which boat wins and by how much? (Or is it a tie?) (b) What is the average velocity of the two boats?
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section: Chapter Questions
Problem 5STP
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Two boats start together and race across a 60-km-wide lake and back. Boat A goes across at 30 km/h and returns at 30 km/h. Boat B goes across at 20 km/h, and its crew, realizing how far behind it is getting, returns at 40 km/h. Turnaround times are negligible, and the boat that completes the trip first wins. (a) Which boat wins and by how much? (Or is it a tie?) (b) What is the average velocity of the two boats?
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