The position x of an experimental rocket moving along a long rail is measured to be x(t) = (4m/s)t + (7m/s2)t^2 + (5m/s3)t^3 – (0.35m/s4)t^4 over the first 10s of its motion, where t is in seconds and x is in meters. Find the velocity of the rocket for the first 10 seconds.   a. 43 m/s b. 224 m/s c. 244m/s d. 2240 m/s

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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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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The position x of an experimental rocket moving along a long rail is measured to be x(t) = (4m/s)t + (7m/s2)t^2 + (5m/s3)t^3 – (0.35m/s4)t^4 over the first 10s of its motion, where t is in seconds and x is in meters. Find the velocity of the rocket for the first 10 seconds.
 
a. 43 m/s
b. 224 m/s
c. 244m/s
d. 2240 m/s
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