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Question
State how the velocity-time graph can be used to find the displacement of the body in a given time.
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Solution
Displacement from velocity-time graph
Displacement is the area enclosed between velocity-time graph and time axis. - The area enclosed above the time axis represents positive displacement and the area enclosed below it is negative displacement.
- Total displacement is obtained by adding the areas numerically with proper sign.
- Here total displacement (between t= 0 s and t= 20 s) = 30-10 = 20 m.
- Displacement is the area enclosed between velocity-time graph and time axis.
- The area enclosed above the time axis represents positive displacement and the area enclosed below it is negative displacement.
- Total displacement is obtained by adding the areas numerically with proper sign.
- Here total displacement (between t= 0 s and t= 20 s) = 30-10 = 20 m.
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