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Physics Ch. 3

QuestionAnswer
Define recall. A vector has a magnitude as well as direction.
What are some vector quantities? Displacement, velocity, force, and momentum.
What does a scalar quantity give? Give some examples. It only has magnitude, Ex. Mass, time, temperature, distance.
Define resultant. A vector representing the sum of two or more vectors. -Vectors can be added graphically.
For vectors in one dimension, we can use ___________ or ___________ to find their total displacement. Addition; Subtraction.
If the vectors are at right angles to each other, what can you use to find displacement? The Pythagorean Theorem.
How can you add vectors with a graph? Tail-to-tip Method.
True or false: You can't multiply vectors by scalars. False. -The result is a vector cV that has the same direction but a magnitude cV. If c is negative, the resultant vector points in the opposite direction.
Define components. Any vectors can be expressed as the sum of two other vectors, which are called its components.
To find an angle, use the... Inverse operation. Ex. Inverse Sine, Inverse Tangent.
In SohCahToa, what is hypotenuse equal to in terms of vectors? The resultant vector.
The x-direction is ________; the y-direction is ___________________. Uniform Motion; Uniformly Accelerated Motion.
True or false: Two balls fall at the same time from the same height. If one is pushed horizontally and one is dropped straight down, they will drop at the same time. True.
Define projectile motion. Motion with constant acceleration in two dimensions, where the acceleration is g and is down. Projectiles also follow parabolic trajectories.
Created by: OliviaRoark
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