Physics Chap 3: 2-dimensional motion and vectors

Scalar quantities

quantities that can be expressed completely by single numbers with appropriate units

vector quantities

quantities that require magnitude AND direction for their complete description

*component

*each separate vector

*resultant

*single vector that produces the same result as the combined components

to add vectors use the

parallelogram method or head to tail method

graphic solution

if the vector diagram is drawn accurately to scale, the resultant can be measured directly with a ruler and a protractor

trigonometric solution

using trig ratios to calculate the magnitude and direction of the resultant

parabola

the path of a projectile is a curve called a

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THE HORIZONTAL VELOCITY OF THE PROJECTILE WILL BE CONSIDERED CONSTANT
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THE HORIZONTAL VELOCITY OF THE PROJECTILE WILL BE CONSIDERED CONSTANT
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THE HORIZONTAL AND VERTICAL MOTIONS ARE COMPLETELY INDEPENDENT OF EACH OTHER
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THE HORIZONTAL AND VERTICAL MOTIONS ARE COMPLETELY INDEPENDENT OF EACH OTHER
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acceleration due to gravity

-9.81m/s2

*trajectory

*path of the projectile

projectile

objects that are thrown or launched into the air and are subject to gravity

*projectile motion

*freefall with an initial horizontal velocity

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