If a force of $250\, N$ act on body, the momentum acquired is $125\, kg-m/s$. What is the period for which force acts on the body ......... $\sec$
If a force of $250\, N$ act on body, the momentum acquired is $125\, kg-m/s$. What is the period for which force acts on the body ......... $\sec$
$0.5$
$0.2 $
$0.4$
$0.25$
If a force of $250\, N$ act on body, the momentum acquired is $125\, kg-m/s$. What is the period for which force acts on the body ......... $\sec$
Change in momentum = Impulse
$⇒$ $\Delta p = F \times \Delta t \Rightarrow \Delta t = \frac{{\Delta p}}{F} = \frac{{125}}{{250}} = 0.5\;\sec $
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