Question 1147476
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            An ability to read such plots is essential part of studying and undesranding kinematics.


            You are given the plot of the velocity (the speed) as the function of time.



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(A)  the particle moves forward  at those values/intervals of time, where v(t) > 0. 


(B)  the particle moves backward at those values/intervals of time, where v(t) < 0. 


(C)  at the time moment when the speed becomes equal to zero (changes from positive to negative).


(D)  


(E)  the particle is slowing down at  4 <= t <= 7, where the plot v(t) has negative slope, but the particle still moves forward.


(F)  The acceleration is zero where the plot v(t) has zero slope, i.e. is horizontal.


(G)  4 units of length per unit of time in positive direction

     and  4 units of length per unit of time in negative direction (one single point on the time axis.


(H)  This last question you just ready to answer on your own.
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