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  4. Two bodies collide as shown in the diagram. During the collision, they exert impulse of magnitude J on each other. <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-bwqypterbyta.png /> For what values of J (in N s ) the 2 kg block will change its direction of velocity?

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Q. Two bodies collide as shown in the diagram. During the collision, they exert impulse of magnitude $J$ on each other.

Question

For what values of $J$ (in $N \, s$ ) the $2 \, kg$ block will change its direction of velocity?

NTA AbhyasNTA Abhyas 2020

Solution:

$2kg$ block will change its direction if $v_{2}$ is negative.
or $6-\frac{J}{2} < 0$
$\therefore \frac{J}{2}>6$
or $J>12\text{N s}$