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