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? О а. 12 m/s2 O b. 3 m/s2 O. -12 m/s2 O d. -8 m/s2

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? О а. 12 m/s2 O b. 3 m/s2 O. -12 m/s2 O d. -8 m/s2

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 2P: A hiker walks 2.00 km north and then 3.00 km east, all in 2.50 hours. Calculate the magnitude and...

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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?
а. 12 m/s2
O b. 3 m/s2
O. -12 m/s2
O d. -8 m/s2

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