Acceleration

Table of Contents- 1. Acceleration 2. Increasing Speed 3. Decreasing Speed 4. Changing Direction 5. Calculating Acceleration 6. Xtranormal 7. Graphing Acceleration  8. Speed-Versus-Time Graph  9. Distance-Versus-Time Graph  10. Velocity 11. Pixton Comics 12. Works Cited

**Acceleration**- In science, acceleration refers to increasing speed, decreasing speed, and changing direction.

Is when an object gains momentum or it accelerates.
 * Increasing Speed-**

"Increasing the Speed of a Ball"

Increasing Speed In this picture you can see that the football player is throwing the football. He is increasing the speed of the football as a reaction to him throwing it.

Is when an object loses momentum or decelerates.
 * Decreasing Speed-**

"Decreasing the Speed of a Ball"

Decreasing Speed This picture shows a girl catching a softball and in doing so she is decreasing the speed of the softball.

Is when an object totally changes its coarse of travel.
 * Changing Direction-**

"Changing the Direction of a Ball"

Changing Direction In this picture you can see that when the soccer player kicks the soccer ball it changes from going towards him to going away from him.

To determine the acceleration of an object moving in a straight line, you must calculate the change in speed per unit of time.
 * Calculating Acceleration-**

__Final Speed- Initial Speed__ = Acceleration Time media type="custom" key="6214259"

You can use both a Speed-versus-Time Graph and a Distance-Versus-Time Graph to analyze the motion of an accelerating object.
 * Graphing Accelerating-**

__Rise__ = Slope Run

Speed goes on the y-axis and Time goes on the x-axis.
 * Speed-Versus-Time Graph-**

Distance goes on the y-axis and Time goes on the x-axis.
 * Distance-Versus-Time Graph-**


 * Velocity- **

Velocity has to do with acceleration because when you change direction you are changing your velocity or when you are speeding up or slowing down you are also changing your direction. "Velocity"

In this picture you can see that the car is changing it's velocity and acceleration. media type="custom" key="6214155"  Padilla, Michael J., Martha Cyr, and Ioannis Miaoulis. //Prentice Hall Science Explorer: Motion, Forces, and// //Energy //. Needham, Mass.: Pearson Prentice Hall, 2005. Print.
 * Works Cited**

"Increasing the Speed of a Ball." //Google Images//. Web. 21 May 2010.< [] >

"Decreasing the Speed of a Ball." Google Images. Web. 21 may 2010. < [] >

"Changing the Direction of a Ball." Google Images. Web. 21 May 2010.< [] >

"Velocity." Google Images. Web. 21 May 2010. < []>