A particle starts from position x=−x0 at time t=0 in positive x direction according tot he give velocity-time (v-t) graph. The position (x) of particle at any time t can be represented as :
A
x=x0+v0t+12v0t0t2
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B
x=−x0+12v0t0t2
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C
x=x0+12v0t0t2
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D
x=−x0−12v0t0t2
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Solution
The correct option is Bx=−x0+12v0t0t2 Given: x=−x0;t=t0
Use equation of motion: v=u+at
v0=(0)+at0
v0=at0
a=v0t0......Eq:01
Now, use equation of motion s=ut+12at2 for distance/position (x) at any time (t);
x=(0)t+12at2
x=12at2
Put the value of 'a' from Eq:01;
x=12(v0t0)t2
Required position of particle at any time (t): x=−x0+12(v0t0)t2