CK-12 Physical Science Concepts - For Middle School

4.4. Speed http://www.ck12.org time= distance speed Q:If you walk 6 km at an average speed of 3 km/h, how much time does it take ...

http://www.ck12.org Chapter 4. Motion and Forces 4.5 Position-Time Graphs Describe how to draw a position-time graph. Explain h ...

4.5 Position-Time Graphs FIGURE 4.6 is zero and so is the velocity. The position of the object is not changing. The steeper the ...

http://www.ck12.org Chapter 4. Motion and Forces velocity= ∆d ∆t = 25 m−0 m 5 s−0 s = 25 m 5 s =5 m/s At the following URL, revi ...

4.6. Velocity http://www.ck12.org 4.6 Velocity Distinguish between velocity and speed. Represent velocity with vector arrows. D ...

http://www.ck12.org Chapter 4. Motion and Forces Using Vector Arrows to Represent Velocity The arrows in theFigure4.8 represent ...

4.6. Velocity http://www.ck12.org velocity= distance time This is the same formula that is used for calculating average speed. I ...

http://www.ck12.org Chapter 4. Motion and Forces Review What is velocity? How does velocity differ from speed? Why is velocity ...

4.7. Acceleration http://www.ck12.org 4.7 Acceleration Define acceleration. Give examples of acceleration. Describe how it feel ...

http://www.ck12.org Chapter 4. Motion and Forces Examples of Acceleration You can see several examples of acceleration in the pi ...

4.7. Acceleration http://www.ck12.org Summary Acceleration is a measure of the change in velocity of a moving object. It measur ...

http://www.ck12.org Chapter 4. Motion and Forces 4.8 Calculating Acceleration from Velocity and Time Explain how to calculate a ...

4.8 Calculating Acceleration from Velocity and Time reaches the bottom. If it takes him 5 seconds to reach the bottom, what is h ...

http://www.ck12.org Chapter 4. Motion and Forces Summary To calculate average acceleration when direction is not changing, divi ...

4.9 Velocity-Time Graphs 4.9 Velocity-Time Graphs Show how to draw a velocity-time graph. Explain what the slope of a velocity- ...

http://www.ck12.org Chapter 4. Motion and Forces FIGURE 4.11 Acceleration and Slope In a velocity-time graph, acceleration is re ...

4.9. Velocity-Time Graphs http://www.ck12.org check your understanding by describing the motion represented by the velocity-time ...

http://www.ck12.org Chapter 4. Motion and Forces 4.10 Force Define force. Relate force to motion. Identify the SI unit for forc ...

4.10. Force http://www.ck12.org Force and Motion Forces cause all motions. Everytime the motion of an object changes, it’s becau ...

http://www.ck12.org Chapter 4. Motion and Forces Force as a Vector Force is a vector, or a measure that has both size and direct ...