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At a certain time a particle had a speed of 18 m/s in the positive x direction, and 4 s later its speed was -30 m/s. What is the average acceleration of the particle during this 4 s interval?

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 7P: A person takes a trip, driving with a constant speed of 89.5 km/h, except for a 22.0-min rest stop....

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Concept explainers

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –

Question

At a certain time a particle had a speed of 18 m/s in the positive x direction, and 4 s later its speed was -30 m/s. What is the average
acceleration of the particle during this 4 s interval?
O a. -8 m/s2
O b. 3 m/s2
Oc 12 m/s2
CO d. -12 m/s2

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