Chap 3/4 Flashcards
Vector
Asks for how far something is and how to get there = displacement
Ex: 3 miles East
Displacement (chapter 3/4)
Straight line distance between a and b and direction = angle
Magnitude of displacement
Is just asking for the distance
Can be solved by using the Pythagorean theorem
Scalar
A number for how far something is or how much it weighs, etc
Ex: 500 grams in a water bottle
Distance
If you found the magnitude of displacement, how do you find just the displacement
Well since you have the Amt of straight line distance
You need to find the direction
You can do that by using the calculator
2nd tan
Velocity
Associated with
Vector or Scalar? Why?
Velocity - how fast and which way
ex: 65 mph, south
Associated with displacement
Vector because it’s not only just a number but also has direction
Speed
Associated with
Scalar or Vector, why?
How fast ex: 55 mph
Associated with distance
Scalar because it’s just a number
Acceleration:
Change in speed
+ & -
How we distinguish brown speeding up and speeding down
+ = up
- = down
Acceleration unit
What does it mean
m/s^2
Meters over seconds squared