# Dot product

Classical Mechanics Level pending

If velocity and position vectors of an object are given by: $\vec{v}=(3\hat i+\hat j)\dfrac{m}{s}$ $\vec r=(4\hat i)m$ $m=2 kg$ Find its angular momentum (just magnitude, not direction)

Hint: Use $$L=m(\vec v \cdot \vec r)$$.

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