v (m/s) 4. Consider the following v vs. t graph a. What is the acceleration at: i. t= 11 s? ii. t= 15 s? b. How far, and in which direction, did the object travel: i. ii. from t = 13 to t = 18 s? c. During what time intervals is the object speeding up? slowing down? d. During what time intervals is the acceleration positive? Negative? Zero? from t = 4 to t = 11 s? e (sec) ip
v (m/s) 4. Consider the following v vs. t graph a. What is the acceleration at: i. t= 11 s? ii. t= 15 s? b. How far, and in which direction, did the object travel: i. ii. from t = 13 to t = 18 s? c. During what time intervals is the object speeding up? slowing down? d. During what time intervals is the acceleration positive? Negative? Zero? from t = 4 to t = 11 s? e (sec) ip
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Step 1
4. a)
i) Acceleration at t= 11s is slope of velocity versus time graph
Slope at t=11s = (-4m/s-4m/s)/(13s-9s) = -2m/s2
So acceleration at t=11s is -2m/s2
ii) Acceleration at t=15s
At t=15s ,velocity is not changing, so acceleration is 0m/s2
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