These questions cover chapter 3, which is pages 79-103.

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vector

a quantity that has botth magnitude and direction

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scalar

a quantity that has magnitude, but no direction

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resultant

the sum of two or more vectors

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Pythagorean theorem

a² + b² = c²

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tangent

opposite/adjacent

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cosine

adjacent/hypotenuse

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x and y

the two components of a vector

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to find the x component of velocity

use v*cos θ

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to find the y component of velocity

use v*sin θ

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projectile

a thrown or launched object that is given an initial horizontal velocity and is then in freefall

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path of projectile

parabolic

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regardless of initial horizontal velocity

all projectiles fall at the same rate

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horizontal

type of projectile launch that initially has only horizontal velocity

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angled

type of projectile launch that has both horizontal and vertical initial velocity