The velocity vs. time graph for an object moving along a straight path is shown in the figure below.
(i) Find the average acceleration of this object during the following time intervals.
(a) 0 s to 5.0 s
(b) 5.0 s to 15 s
(c) 0 s to 20 s
(ii) Find the instantaneous accelerations at the following times.
(a) 2.0 s
(b) 10 s
(c) 18 s
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From the given graph we can observe that the velocity of the object is constant (i.e. -8 m/s)
from “t = 0 s” to “t = 5 s” hence we can say that acceleration of is “zero” in this time period.
We can observe from the graph, that in the time interval “t = 5 s” to “t = 15 s” the velocity of th...
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