Homework Answers
Please note that from distance-time curve we can find average
velocity over specific time by checking the slope of that
graph.
If the curve is leaning towards positive time axis then slope is
positive and hence velocity is positive.
If the curve is leaning away from positive time axis and towards
negative time axis, then slope is negative and hence velocity is
negative.
If the curve is along time axis, then slope is Zero and hence
velocity is zero.
a) So, for t =3s to t =5s , we see that slope is positive hence,
average velocity is positive in this region.
b) Similarly. for t=1s to t=2s the velocity is negative.
c) The velocity is zero in two intervals that is t=0s to t=1s and then t=2s to t=3s
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