Study the given graph and answer the following questions from it: (a) Which parts of the graph shows accelerated motion?(b) Which part of the graph shows retarded motion? Calculate the retardation.(c) Calculate the distance travelled by the body in the first 2 seconds of the journey.
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Explanation:
a) positive slope gives accelerated motion .
From A to B
From C to D
b)negative slope gives retarded motion
From D to E
slope of DE=10-5/8-10
=-5/2
=-2.5m/s^2
c)distance travelled under v-t graph is given by area under the graph
area=1/2b×h
distance=1/2×2×5
distance=5m
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