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Question

The acceleration time graph for the object whose displacement time graph is shown below is?

A
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B
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C
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D
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Solution

The correct option is B
The xt graph is a downward open parabola whose general equation is
y(x)ax2+bx+c
Comparing it with equation of displacement.
x=u0t+12at2
The coefficient of term (t2) should be a negative and also it should be constant.

a= ve (as t2 can't be negative)

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