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Misha Larkins [42]
3 years ago
12

At a certain time a particle had a speed of 18 m/s in the positive x direction, and 2.4 s later its speed was 30 m/s in the oppo

site direction. What is the average acceleration of the particle during this 2.4 s interval?
Physics
1 answer:
hoa [83]3 years ago
3 0
<h2>Average acceleration of the particle during the 2.4 s interval is -20 m/s²</h2>

Explanation:

We have equation of motion v = u + at

     Initial velocity, u =  18 m/s

     Final velocity, v =  -30 m/s    

     Time, t = 2.4 s

     Substituting

                      v = u + at  

                      -30 = 18 + a x 2.4

                      a = -20 m/s²

     Acceleration is -20 m/s²

Average acceleration of the particle during the 2.4 s interval is -20 m/s²

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