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For a body traveling with uniform acceleration its final velocity V=180 - 7x  where x is the distance traveled by the body in meters.  Then the acceleration is

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By Expert Faculty of Sri Chaitanya
a
–8 m/s2
b
–3.5 m/s2
c
–7 m/s2
d
180 m/s2
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detailed solution

Correct option is B

V=180−7xV2=180−7x2vdvdx=−7vdvdx=−3.5 m/s2  other method  comparing with equation V2=U2+2aS 2a=-7 a==-3.5


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