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10 questions from this quiz
Magnitude and direction
They separate motion into independent parts
10โmโ sโ110 \, \text{m} \cdot \text{s}^{-1}10mโ sโ1
vx=vcosโกฮธv_x = v\cos\thetavxโ=vcosฮธ
45ยฐ45ยฐ45ยฐ
They have incompatible units
5โmโ sโ15 \, \text{m} \cdot \text{s}^{-1}5mโ sโ1
Resolve each velocity into components
ฮvโ=vโfโvโi\Delta\vec{v} = \vec{v}_f - \vec{v}_iฮv=vfโโviโ
Yes, if direction changes
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