Question

Due to an impulse, the change in momentum of a body is $1.8kgm{s}^{-1}$. If the duration of the impulse is 0.2 s, then what is force produced in it?

• A. 9 N
• B. 8 N
• C. 7 N
• D. 6 N

Answer 1

The correct option is A 9 N

Given that, change in momentum or $△\left(mv\right)=1.8kgm{s}^{-1}$
Duration of the impulse or t = 0.2 sec
We know that:
Impulse =Change in momentum = F $\times t$
$△\left(mv\right)=F\times t$
F $=\frac{△\left(mv\right)}{t}=\frac{1.8}{0.2}$
$\Rightarrow$ F=9 N