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I want to know the answer of the asked question through image

I want to know the answer of the asked question through image

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Grade:12th pass

1 Answers

Eshan
askIITians Faculty 2095 Points
5 years ago
From conservation of linear momentum,

m_1\vec{v_1}+m_2\vec{v_2}=(m_1+m_2)\vec{v}
\implies (2000)(20\hat{i})+(8000)(5\hat{j})=(2000+8000)(\vec{v}) \implies \vec{v}=4(\hat{i}+\hat{j})

Hence the speed of the locked vehicles is4\sqrt{2}m/sand the direction of travel is45^{\circ}to main road.

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