Given, m‌=100g=0l‌kg ∆t‌=2‌ms=2×10−3s Initial speed, u=10m∕s Let final speed be v . We know that, area under force-time graph gives impulse or change in momentum. ∴ Area of the triangle =|∆p| (where, p= momentum) ⇒‌
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× Base × Height =|pf−pi
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| (where, pf= final momentum and pi= initial momentum) ⇒‌