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Byju's Answer
Standard XII
Physics
The 'e' Equation
The graph des...
Question
The graph describes an airplane’s acceleration during its take – off. The airplane’s velocity when it lifts off at t = 20s is
A
40 m/s
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B
50 m/s
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C
90 m/s
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D
180 m/s
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Solution
The correct option is
C
90 m/s
Area under the graph = Change in velocity
=
40
+
50
=
90
m
/
s
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3
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