Flashcards in Units and Kinematics Deck (11):

1

## Vector

### Quantity that has both magnitude and direction. Examples: displacement, velocity, force, acceleration, momentum, electric field strength, and magnetic field strength.

2

## Scalar

### Quantity that has only magnitude. Examples: mass, length, time, density, energy, and temperature.

3

## Name the common trigonometric relationships.

###
sin θ = opposite/ hypotenuse -- sin 30 = 1/2

cos θ = adjacent/ hypotenuse -- cos 60 = 1/2

tan θ = opposite/ adjacent

4

## How do you find the magnitude of a vector?

### Use the Pythagorean Theorem. Also use the theorem to find the components of a vector, particularly while working with projectile motion.

5

## Displacement

### Vector quantity describing the straight line distance between the initial and final position.

6

## Velocity

### A vector quantity describing displacement over time. v = Δx/ Δt.

7

## Instantaneous Velocity

### At a single instant in time, v = lim Δx/ Δt, Δt --> 0

8

## Speed

### A scalar quantity describing the actual distance traveled over time, s = d/ Δt

9

## Acceleration

### A vector quantity describing the change in velocity over the change in time, a = Δv/ Δt.

10

## Instantaneous Acceleration

### At a single instant in time, a = lim Δv/ Δt, Δt --> 0

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