Question

plz answer this question

Answer 1

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a) The area under the graph gives us change in velocity.
b) Area of graph from 0-3 sec = 12
Area of graph from 3-5 sec = 8
(See the velocity time graph in pic)
c) Displacement = Area from 0-3 of velocity-time graph
$d = \frac{1}{2} \times 12 \times 3 = 18 \: m$