The position of a particle moving along the x axis is given by x = 3t2 - 12t - 20m, where t is in s. Determine the following a. average velocity during the time interval t = 2.5 s to t = 4.5 s b. instantaneous velocity at 2s C. average acceleration during the time interval t= 2.5 s to t= 4.5 s d. instantaneous acceleration at 2s e. Is the particle speeding up or slowing down at 3s? Justify your answer.

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 49P: At t=10s , a particle is moving from left to right with a speed of 5.0 m/s. At t=20s , the particle...
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The position of a particle moving along the x axis is given by x = 3t2 - 12t - 20 m, where t is in s. Determine the following
%3D
a, average velocity during the time interval t = 2.5 s to t = 4.5 s
b. instantaneous velocity at 2s
C. average acceleration during the time interval t = 2.5 s to t = 4,5 s
d. instantaneous acceleration at 2s
e. Is the particle speeding up or slowing down at 3s? Justify your answer.
Transcribed Image Text:The position of a particle moving along the x axis is given by x = 3t2 - 12t - 20 m, where t is in s. Determine the following %3D a, average velocity during the time interval t = 2.5 s to t = 4.5 s b. instantaneous velocity at 2s C. average acceleration during the time interval t = 2.5 s to t = 4,5 s d. instantaneous acceleration at 2s e. Is the particle speeding up or slowing down at 3s? Justify your answer.
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