Mass and newtons 1st law

The velocity of a body is changed only when acted upon by an additional force. The produced acceleration or deceleration is proportional to and in the same direction of the force. 

If a baseball player hits a ball with double the force, the rate at which the ball will accelerate (speed up) will be doubled. Football players can slow down, stop, or reverse the direction of other players depending upon how much force they q

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Inertia investigation

Today i was playing with sheamus with the tennis ball we were kicking it around 

I think kne example of a situation where something move while some stay still was when the one of the table cloth. Where you put the table cloth on top of the table and put the books on top and pull the cloth off the table without moving the books

I think this is an example i was making a paper airplane in mr.Fosters class and threwit at the end of class

Balanced and unbalanced

Balance diagram

So there is me standing up then two girls that have the same strength star fighting over me one is pulling me to the right and the other girl to the left. So normal force and gravity force are the same and applied force are the same because they both have the same strength the applied force is the same size in each side 

Unbalanced diagram 

So i am walking when all of the sudden areally  big branch falls on me. There is  applied forces pushing me down and gravety forcespushing me down as well a  making this sitution really unbalance 

Free body diagram

Theirs gravety force acting up then normal force and friction force.  Thiers  fapp force created by the engine then normal force were is the motorcycle preventing the driver going to the floor the gravety force witch is a force that pulls everything to the middle of the earth 

Vector and scalar

 scalar quantity is a one dimensional measurement of a quantity, like temperature, or weight.  A vector has more than one number associated with it.   A simple example is velocity.  It has a magnitude, called speed, as well as a direction, like North or Southwest or 10 degrees west of North.  You can have more that two numbers associated with a vector.  For example you can add a height dimension to velocity and say, for example, ' I am going uphill at a 5 degree slope in the Northeast direction'.    Vectors are frequently broken down into their components along an orthogonal coordinate system, like the x and y axes.   So you can say the y-component of my speed is 3 km/sec and the x-component of my speed is 4 km/sec.   The magnitude, or speed is the square root of the sum of the individual components, 5 in this case.  The direction with respect to the x-axis would be given by the arctangent of V_y / Vx or 36.9 degrees. 

• Time - Scalar quantities often refer to time; the measurement of years, months, weeks, days, hours, minutes, seconds, and even milliseconds.
• Increase/Decrease in Temperature - The measurement of the medium’s temperature is a scalar quantity; the measurement of the increase or decrease in the medium’s temperature is a vector quantity.

Four forces

Applied force ~ A push or a pull cause by a person or thing. I use applied force in football all the time when i hit and drive were i will hit the person infront of me and push them.

Normal Force ~ A force from a surface usually pushing up. I believe when i am in bed this force is use on me 

Tensions force ~ a pulling force usually in a string rope or chain when i go to the ymca i pull a rope to lift weight

Gravitational force ~ a force that pulls all objects ti the middle of the earth. Well i get pull everything gets pull by gravety

I gave you my notebook

I dont think it was smart of me to guve you my notebook with my notes there