KinematicsMedium
Question
The graph between the displacement x and time t for a particle moving in a straight line is shown in figure.
Find the correct relations for acceleration on different parts of curve.
Options
A.OA → +, AB → 0, BC → +, CD → +
B.OA → -, AB → 0, BC → +, CD → 0
C.OA → +, AB → 0, BC → -, CD → +
D.OA → -, AB → 0, BC → 0, CD → +
Solution
a = 
= change in velocity w.r.t the time
For OA → velocity decreases so a is negative
For AB → velocity constant so a is zero.
For BC → velocity constant so a is zero
For CD → velocity increase so a is positive.
= change in velocity w.r.t the time For OA → velocity decreases so a is negative
For AB → velocity constant so a is zero.
For BC → velocity constant so a is zero
For CD → velocity increase so a is positive.
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