• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/31

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

31 Cards in this Set

  • Front
  • Back
____ - a quantity we can describe with one number, has magnitude ex. ____
Scalar
Mass and energy
____ - a quantity that requires two numbers, has magnitude and direction ex. ____
Vector
Force and momentum
Can represent a ____ as an arrow where the direction of the ____ is the direction of the arrow, the length of the arrow is the ____ of the ____.
vector
vector
magnitude
vector
5 steps for physics problems!
1. Confidence
2. Diagram
3. System
4. Formula
5. Plug and chug
Can only add scalars to ____ and vectors to ____.
scalars
vectors
Multiply a scalar times a vector - changes the ____ w/o changing the ____.
length
direction
To add vectors place the head of one and place it at the ____ of the other. The resulting ____ or the ____ is drawn from the tail of the first vector to the ____ of the second vector.
tail
force vector
net vector
head
Reversing the direction of the vector makes it ____ (for ____ etc)
negative
subtraction
Dot product = ____ (force times displacement = scalar work)
product of the magnitude of two vectors times cosine of angle between them
Cross product = ____ (force times displacement = vector torque)
magnitude of the vector product is equal to the product of the two vectors times the sine of the angle between them
____ are - two vectors that are 90 degrees to each other and whose sum is equal to the original vector
Components
Notice that the two components always form a ____ with their vector sum
right triangle
SOH CAH TOA
Sine
Cosine
Tangent
Can replace the vector with ____ -
components
____ - total number of steps to get somewhere (a ____)
Distance
scalar
____ - how far you are from where you started (a ____)
Displacement
vector
____ = distance/time (a ____)
Speed
scalar
____ = displacement/time (a ____)
Velocity
vector
____= Δvelocity/time
Acceleration
55mph squared = ____
a change in velocity of 55 mph every hour, therefore would take 1 hour to accelerate from 0 to 55 mph
Assume for mcat Gravitational constant, ____
g = 10 m/s2
So for g each second velocity changes by ____, after 1 second it is moving ____ after 2 seconds it is ____ etc
10 m/s
10 m/s
20 m/s
Throw an object at 30 m/s, so velocity drops every second so ____ seconds to reach peak

Throw it up at 50 m/s how long to come back and hit the ground, ____ second up and ____ down so ____ seconds
3 seconds
5
5
10
3 uniform accelerated formulas you should memorize:
X = X0 + (V0)T +1/2aT^2
V^2 = V0^2 +2ax
v= v0 +at
How long to drop 180m?
X=X0 + (V0)T +1/2aT^2
X0 and V0 are 0, and then X = 1/2aT^2
So solve and therefore x = 6 seconds
Distance travelled is the _____ times the time, when acceleration is constant _____ is the _____ times the ____ divided by ____.
average velocity
average velocity
initial velocity
final velocity
two
Drop something out of a plane, how far has it fallen after 4 seconds?
How far does it travel in the second and third seconds?
(40 m/s + 0 m/s )/2 = 20 m/s *4 seconds = 80 m
After 1st second velocity = 10 m/s and after 3rd = 30 m/s so average is 20 m/s
20*2 = 40m
As long as there is no air resistance the flight is not affected by ____ or ____, so with no air resistance one could throw a feather as far as a baseball
mass
shape
Air resistance is caused by the projectile crashing into ____, the more ____ hit per second the greater the air resistance so surface ____, ____, and ____ all affect air resistance
Different mass - respond to ____ differently such as more inertia = slows down less etc.
air molecules
air molecules
area
shape
velocity
air resistance
____, for vertical velocity only and can only use it when initial or final velocity is 0
V = sqrt(2gh)
Projectile shot at 100 m/s at 30 degrees from the ground.
First separate vertical from horizontal - the initial vertical velocity is ____
So know ___ seconds up and ____ seconds down so ____ seconds in the air And then know ____ = max height
Range = horizontal distance traveled is constant ____
100sin30 = 50 m/s
5
5
10
50/2 = 25 25m/s so 25 m/s *5 = 125m
100cos30 = 87 m/s, so 870m