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Forces and Motion

Forces and Motion. Notes to Review. Important Vocabulary. Check back often, as words will be added. Force Motion Distance Displacement Potential Energy Kinetic Energy Time Speed Units. X-axis Y-axis Speed = distance/time. Distance vs. Displacement. Distance vs. Displacement.

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Forces and Motion

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  1. Forces and Motion Notes to Review

  2. Important Vocabulary

  3. Check back often, as words will be added • Force • Motion • Distance • Displacement • Potential Energy • Kinetic Energy • Time • Speed • Units • X-axis • Y-axis • Speed = distance/time

  4. Distance vs. Displacement

  5. Distance vs. Displacement • Distance is the total length a person or object traveled. • Displacement is the shortest distance from the starting position to the end position.

  6. For Example… 90 Elvis Andrus hits a triple for the Texas Rangers. Therefore, he runs from home plate to third base. * His distance is 270 feet (90 feet between each base = 90+90+90) * His displacement is 90 feet (shortest distance is the 90 feet from third base to home) 90 90 90

  7. For Example… 90 Mike Napoli hits a home run for the Rangers. * His distance is 360 feet (90 feet between each base = 90+90+90+90) * His displacement is 0 feet because he started and ended at the same point. Therefore, the distance between the two is 0 feet. 90 90 90 0

  8. Potential & Kinetic Energy • Potential energy is the stored energy of an object due to position. • Kinetic energy is the energy of an object due to movement.

  9. For Example… • Click on the following website for a great animation of this concept! http://www.teachersdomain.org/asset/mck05_int_rollercoaster/

  10. Calculating Speed

  11. Name some times… Name some distances… Millimeters Centimeters Meters Kilometers Astronomical Units Light Years • Seconds • Minutes • Hours • Days • Weeks • Months • Years • Millenium Don’t swear at your teacher, but… Inches Feet Yards Miles

  12. How? • We can calculate speed with anydistance and anytime! Just follow the formula!

  13. Formula • Speed = Distance ÷ Time • S = d / t • Example: The snail slid his way down the hall. He traveled 6 km in 2 days. What is his speed? • S = d / t • S = 6 km / 2 days • S = 3 km/day

  14. Let’s Practice… • It takes 2.0 hr. for Krusty the Clown to drive 20 km through a city during rush hour. What is his average speed?

  15. It takes 2.0 hrs. for Krusty the Clown to drive 20 km through a city during rush hour. What is his speed?

  16. Try again… • Ronald travels North to McDonald’s and covers a distance of 36 km. It takes him 6 minutes to get there. What is Ronald’s speed?

  17. Ronald travels North to McDonalds and covers a distance of 36 km. It takes him 6 minutes to get there. What is Ronald’s speed?

  18. Who rides his motorcycleunder the sea? Spongebob and Patrick decide to race their motorcycles. A) Spongebob traveled 15 km in 2 minutes. What was his speed? B) Patrick traveled 22 km in 10 minutes. What was his speed? C) Who won the race? !!!

  19. Spongebob traveled 15 km in 2 minutes. What was his speed?

  20. Patrick traveled 22 km in 10 minutes. What was his speed?

  21. Who Won the Race?

  22. Distance vs Time Graphs

  23. The walker in the graph above is walking, then comes to a stop. This is seen in the flat line of the graph, the distance does not change. In the graph below, the walker walks away from the origin then turns and walks towards the staring point. The walker in the graph above is walking at a slower pace than the walker of the graph below. This is seen in that the walker covers a greater distance in a shorter time in the graph below.

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