position Flashcards
position
is the location of an object
Motion
Change in a position of an object
Speed
Is the distance shoveling a given time and is the measure of how far something moves in a given amount of time?
formula
Speed = distance/time
units
Meters second M/S or KM/HR
average speed
Is a way to calculate the speed of an object that may not be moving at a constant speed
Slope equals the average speed of an object
steeper slope = faster time
straight line means…
vector
Is a quantity that has both size and direction
Velocity
velocity = distance/time north
acceleration
Measures a rate of change in velocity
Acceleration formula
Ut- Ui
————
t
What’s the actual acceleration formula?
final velocity- starting velocity
——————————————
Time
Centripetal acceleration
Is acceleration and circular motion
force
is a push or pull
newton
Unit used to measure force
Spring scale
what is force Measured on?
vector
Force has both size and direction so it is a…
net force
Combination of all the forces acting on an object
balance force
Will not cause a change in motion for moving object or cause a non-moving object to start moving
unbalanced force
Produce a change in the object motion
first law of motion
object rest stays, and rest object in motion stays in motion, at the same speed and direction unless it experiences an unbound force the law is also called the law of inertia
inertia
This is the tenancy of all objects to resist a change in motion
Say an example of the tablecloth trick and the egg cart helmet
object at risk, the friction made the plates in book stand table while the cloth was being pulled from under, the object in motion is the egg cart when the cart stops or without a seatbelt when the car stops
Second law of motion
States the acceleration of an object depends on the mass of an object and the amount of force applied
Force = mass x acceleration
f=ma explained
What’s a vacuum?
Area no air example space
feather and hammer experiment, Galileo
In space there’s no air so the hammer and feather fall at the same time. Air friction makes the feather fall a slower pace on earth.
What happens when you toss two balls with the same mass
when the forces are equal the different mass when the bigger one will accelerate more apply a lot of force one goes as far I apply not so much force one doesn’t go that far
look at F = MA made notes with the two balls
Third law of motion states
States whenever one object exert to force the second object exerts an equal opposite force on the first object
Newton’s cradle
Every action there is an equal opposite reaction, for example,…
Gravity
Is a force of attraction between objects due to mass
gravity formula
9.8 m/s 2 squared
Force of gravity won’t pull two objects together why?
Because the mass of the earth is so large that it pulls those two objects apart
weight
Created by gravitational force
weight
Is the force depends on mass example the greater the mass of an object, the greater the weight
I.e. hammer and feather
When gravity is only forced affecting the fall, a light object and heavy object hit the ground at the same time
law of universal gravitation
States that all objects attract each other through gravitational force. The gravitational force between two objects increases as the distance between their centers decrease the gravitational force increases with the mass of each object.
