Inertia Investigation

Three examples of inertia in everday life is a soccer ball being kicked the ball is at a constant speed and it never stops until aomething gets in it ways. Another example is if when you pull a table cloth of a table and the things on the table reamin unfallen. A final example is a table is never moves it always stays at rest even when people put plates on them.

Balanced and Unbalanced

http://scienceprojectideasforkids.com/wp-content/uploads/2010/04/forces-balanced-unbalanced.jpg

The FBD on the top showns a balanced object beacuse beacuse each side as the same amount of force on them. The FBD on the bottom is unbalanced beacause the force on the right is bigger than the one on the left so it is being pushed toward the right.

Free Body Diagrams

http://www.physicsclassroom.com/Class/newtlaws/u2l2c1.gif

This free body diagram is showing an object with an equal force . I know this because the Fnorm is equal to Fgrav so the is nothing pulling it or pushing it up or down. Also Ffrict and Fapp are equal to each other so there is no force pulling in it to the left or right.

Vectors & Scalar

Vector quantity is quantity with direction and magnitude. Scalar quantity is a quantity with magnitude only. Vector quantity is used to show is used for force, acceleration, velocity, and other items that need to show a magnitude and direction. And scalar is a quantity with only magnitude or size.

Example of a scalar quantity is time because it only shows a magnitude or an amount.

Example of a vector quantity is velocity because velocity is speed with a direction and it includes an amount.

Four Forces

Applied Force - a pull or a push caused by a person or object. An example is when you push a toy car you pull it back and forth to make it move.

Gravitational Force - A force attracting two objects. An example is if you throw a ball upp gravity pulls it back down.

Normal Force - A force from a surface (usually pushing up). An example is when your sitting you have a normal force.

Tension Force - A pulling force, usually in a string, a rope, or a chain. An example is if you tie an object with rope and then you pulling it.

G.U.E.S.S Method

G-(Given) write what is given in the question
U-(Unknown) find what needs to be solved
E-(Equation) state the formula used to find the unknown
S-(Substitute) Substitute the number into the equation
S-(solve) sole the equation

Acceleration

The sports car will accelerate fast then the bus beacuse it has less wieght. If both cars go 30 MPH  both cars will eventually be at the same speed. At the next stop the bus will have to brake before the sports car beacuse it will take it longer to brake. And since the sports car is light it deosnt need lost of of time to stop.

Modeling Acceleration

http://www.physicsclassroom.com/Class/1DKin/U1L2c1.gif

The first line in the picture shows a constant velocity that the dots are going in. The velocity is the same for each dot. The second line shows the dots with a different amount of space in between them. That is showing the that the dots accelerate at differnet amount after every dot. The shorter the space in betweeb the dots the lower thr acceleration.