Laws Of Motion Question 266
Question: The time in which a force of 2 N produces a change of momentum of $ 0.4kg-m{{s}^{-1}} $ in the body is [CMEET Bihar 1995]
Options:
A) 0.2 s
B) 0.02 s
C) 0.5 s
D) 0.05 s
Show Answer
Answer:
Correct Answer: A
Solution:
$ \vec{F}=\frac{\Delta \vec{p}}{\Delta t}\Rightarrow \Delta t=\frac{|\Delta \vec{p}|}{|\vec{F}|}=\frac{0.4}{2}=0.2\ s $
