If a force of 250 N act on a body, the momentum acquired is 125 kg m s-1, what is the period for which force acts on the body ?

Question

If a force of 250 N act on a body, the momentum acquired is 125 kg m s-1, what is the period for which force acts on the body ? (A) 0.5s . (B) 0.2s (C) 0.4s (D) 0.25s

Tardigrade Admin · Accepted Answer

Force = (Change in momentum/Time) i.e. F = (Δ p/t) i.e. t = (Δ p / F) = (125/250) = (1/2) = 0.5 s .

Q. If a force of 250 N act on a body, the momentum acquired is $125 k g m s^{- 1}$ , what is the period for which force acts on the body ?

0.5s .

0.2s

0.4s

0.25s

Force = $\frac{C han g e in m o m e n t u m}{T im e}$
i.e. F = $\frac{Δ p}{t}$
i.e. $t = \frac{Δ p}{F}$
$= \frac{125}{250}$
$= \frac{1}{2}$
$= 0.5 s$ .

Q. If a force of 250 N act on a body, the momentum acquired is 125kgms−1, what is the period for which force acts on the body ?