On a floor directly underneath a second-floor balcony, there are several spherical

The correct answer for this question is this one: "The drops dripped from a bloody knife about 2 ft above the ground."
On a floor directly underneath a second-floor balcony, there are several spherical drops of blood about 7 mm in diameter. The statement that best accounts for the drops is that the drops dripped from a bloody knife about 2 ft above the ground.

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Momentum is mass x velocity. Although mass is scalar velocity is vector so momentum has both magnitude and direction meaning it is a vector quantity.