A particle of mass \( m \) is at rest at the origin at time \( t=0 ...

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A particle of mass \( m \) is at rest at the origin at time \( t=0 \). It is subjected to a force \( F(t)=F_{0} e^{-b t} \) in the \( x \) direction.
\( \mathrm{P} \) Its speed \( v(t) \) is depicted by which of the following curves?
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