(A) How the velocity varies with time given an initial velocity to the right and

Question

(A) How the velocity varies with time given an initial velocity to the right and constant positive acceleration. Analyze The acceleration vs. time plot for constant acceleration is a straight line parallel to the time axis. It lies above the origin for acceleration to the right. During the acceleration, the velocity increases by 1.6 m/s each second, so the velocity versus time graph is a line with a slope of 1.6 m/s per second. The velocity versus time graph satisfies the equation:

(B) How the velocity varies with time given an initial velocity to the right and constant acceleration to the left. Analyze In this case the velocity is initially positive and is decreasing by 1.6 m/s for each second that passes, because the acceleration is directed towards the left (negative acceleration). The velocity versus time graph satisfies the equation:

Explanation / Answer

a)v=u+at s=ut+1/2gt^2 velcoity is always increses as accelaration is in same direction b)v=u-at upto t=1.875 when final velocity will become zero v=at for t>1.875 the velocity at first decreases upto o till t=u/a==>3/1.6=1.875 after that the velocity will increases after t=1.875 now initial velocity wil be zero and v=at the velocity now will keep on increasing

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