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Questions  

The velocity of a body moving in a straight line is given by V = (3x2+ x)m/s. Find acceleration at x = 2m.
 

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By Expert Faculty of Sri Chaitanya
a
182 m/s2
b
172 m/s2
c
192 m/s2
d
162 m/s2

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detailed solution

Correct option is A

v=3x2+x∴v(u=2)=14ms−2dvdt=6x⋅dxdt+dxdt=6×2×14+14=168+14=182ms−2
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