Secretariat ran the Kentucky Derby with times for the quarter-mile of 25.2 s, 24.0 s, 23.8 s, and 23.0 s. (a) Find his average speed during each quarter-mile segment. (b) Assuming that Secretariat's instantaneous speed at the finish line was the same as the average speed during the final quarter-mile, find his average acceleration for the entire race. (Hint: Recall that horses in the Derby start from rest.)
Secretariat ran the Kentucky Derby with times for the quarter-mile of 25.2 s, 24.0 s, 23.8 s, and 23.0 s. (a) Find his average speed during each quarter-mile segment. (b) Assuming that Secretariat's instantaneous speed at the finish line was the same as the average speed during the final quarter-mile, find his average acceleration for the entire race. (Hint: Recall that horses in the Derby start from rest.)
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter3: Motion Along A Straight Line
Section: Chapter Questions
Problem 9CQ: If you divide the total distance traveled on a car trip (as determined by the odometer) by the...
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Secretariat ran the Kentucky Derby with times for the quarter-mile of 25.2 s, 24.0 s, 23.8 s, and 23.0 s.
(a) Find his average speed during each quarter-mile segment.
(b) Assuming that Secretariat's instantaneous speed at the finish line was the same as the average speed during the final quarter-mile, find his average acceleration for the entire race. (Hint: Recall that horses in the Derby start from rest.)
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