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10 questions from this quiz
Magnitude and direction
They separate motion into independent parts
10 m⋅s−110 \, \text{m} \cdot \text{s}^{-1}10m⋅s−1
vx=vcosθv_x = v\cos\thetavx=vcosθ
45°45°45°
They have incompatible units
5 m⋅s−15 \, \text{m} \cdot \text{s}^{-1}5m⋅s−1
Resolve each velocity into components
Δv⃗=v⃗f−v⃗i\Delta\vec{v} = \vec{v}_f - \vec{v}_iΔv=vf−vi
Yes, if direction changes
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