Q. Study the graph carefully and answer the questions that follow : 

Q. During which time interval is the particle retarding ? 
Q. Is the acceleration constant ? If so find its magnitude and direction. 
Q. At what time is the particle momentarily at rest ? 
Q. Find the displacement of the particle from t = 0 s to t = 6s.

Dear student,a) from 0 to 3sec the particle is retarding.b) acceleration is constant as the slope is constant for graph,acceleration=2-06-3 =23m/s2c) at t=3sec particle is at rest.d) displacement of the particle is zero as area below  the positive x axis is equal to area above the positive x axis.Regards

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