MCQ
In the above question, the impulse acting on the object is
- A$120$ newton $\times \sec$
- ✓$-120$ newton $\times \sec$
- C$30$ newton $\times \sec$
- D$-30$ newton $\times \sec$
✓
Answer
Correct option: B.
$-120$ newton $\times \sec$
Impulse $=$ Force $\times$ Time $=-30 \times 4=-120 \mathrm{~N}-\mathrm{s}$
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