Physics Chapter 3
Resultant
2 or more vectors combined
What is a vector quantity?
A physical quantity that has both magnitude and direction
What is a scalar quantity?
A quantity that has magnitude but no direction
Example of scalar quantity
Average speed
How can you use the Pythagorean theorem to add two vectors that are not perpendicular?
By creating x & y components of each vector then taking there resultants
What is the projection of a vector along an axis of a coordinate system called?
Component
Head to tail vector addition
Create a triangle with 2 vectors then measure the third side
Example of vector quantity
Displacement
Why is the true path of a projectile traveling through earths atmosphere not a parabola?
It's not a parabola because of earths air resistance
If something is launched with a lesser velocity then the height would be
Lower
The length of a vector arrow is proportional to the
Magnitude of a vector
What is the term for the curved, parabolic path that an object follows when thrown, launched, or otherwise projected near the surface of earth?
Parabola
Breaking a vector into two components is given what term?
Resolving
Is ViΔt scalar or vector? What is it?
Scalar, distance
The equation d=√Δx^2+Δy^2 is valid only if Δx and Δy are magnitudes of vectors that have what orientation with respect to each other?
The same direction
Is Δv/Δt scalar or vector? What is it?
Vector, acceleration
The component Ax of a vector A lies along what axis?
X-axis
If the magnitude of a vector component equals the magnitude of the vector, then what is the magnitude of the other vector component?
Zero