{"id":137,"date":"2018-01-19T15:51:52","date_gmt":"2018-01-19T20:51:52","guid":{"rendered":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/?p=137"},"modified":"2018-01-19T15:51:52","modified_gmt":"2018-01-19T20:51:52","slug":"s1-study-guide-key","status":"publish","type":"post","link":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/2018\/01\/19\/s1-study-guide-key\/","title":{"rendered":"S1 Study Guide Key"},"content":{"rendered":"
    \n
  1. A scalar is a number that goes with a Physics concept (mass, speed, time, Energy).\u00a0 It does not have a direction associated with it.\u00a0 A vector has both a number and a direction (velocity, acceleration, Force, 20 Newtons Left).<\/li>\n
  2. Speed does not have a direction (scalar). Velocity does have a direction (vector).<\/li>\n
  3. 5.5 m\/s\/s<\/li>\n
  4. Every second, a falling object covers more distance than in the last second.<\/li>\n
  5. Every second, a falling object will speed up (free fall)<\/li>\n
  6. The acceleration of a freely falling object will always be 9.8 m\/s\/s down.<\/li>\n
  7. Acceleration in the vertical direction: 9.8 m\/s\/s down. Acceleration in the horizontal direction: 0 m\/s\/s.<\/li>\n
  8. The law of Inertia: An object in motion will remain in motion, and an object at rest will remain at rest, unless acted on by an outside force.<\/li>\n
  9. F = ma<\/li>\n
  10. Every force has an equal and opposite force (force pairs).<\/li>\n
  11. Mass is how much “stuff” is inside an object (atoms etc…). Weight is how much the Earth pulls down on something with (its a force in Newtons).<\/li>\n
  12. Twice the mass means it resists twice as much, so it accelerates only half as much (2.5 m\/s\/s).<\/li>\n
  13. Racecar: 52,000 kgm\/s versus Truck: 48,000 kgm\/s<\/li>\n
  14. Impulse is the change in momentum. \u00a0A car that crashes into another car experiences a force for a given time, which slows it down (changes its momentum).<\/li>\n
  15. Decrease the force? Increase the time to stop. \u00a0Because in a car crash, it stops very suddenly with little time, the force is very high.<\/li>\n
  16. Elastic: bounces: no permanent deformation, no generation of heat. Inelastic: sticks together, permanent deformation, heat is produced.<\/li>\n
  17. 13 m\/s.<\/li>\n
  18. KE: energy of motion; PE: energy stored due to an object’s position or location<\/li>\n
  19. The total energy will be the same throughout the fall (GPE into KE)<\/li>\n
  20. The total energy will be the same throughout the launch (EPE into KE)<\/li>\n
  21. Will vary… dropping a rock<\/li>\n
  22. Will vary… throughout the flight of a car being launched into the air<\/li>\n
  23. The car with the faster speed will have 4x the KE.<\/li>\n
  24. Energy is never created or destroyed, but it only transforms from one form to another.<\/li>\n
  25. When you put work into something, it transforms into energy. \u00a0Ex: Lifting a rock into the air<\/li>\n
  26. A rotation spins around an interior point. A revolution orbits around an exterior point.<\/li>\n
  27. Answers will vary; anything moving in a circle… whatever causes that circular motion<\/li>\n
  28. 6.07 N forward<\/li>\n
  29. 157.1 Watts, 110 Watts<\/li>\n
  30. One fourth the gravity (4x weaker)<\/li>\n
  31. One ninth the gravity (9x weaker)<\/li>\n
  32. Four times the gravity (4x stronger)<\/li>\n
  33. Two times the gravity (2x stronger)<\/li>\n
  34. Three times the gravity (3x stronger)<\/li>\n<\/ol>\n

     <\/p>\n","protected":false},"excerpt":{"rendered":"

    A scalar is a number that goes with a Physics concept (mass, speed, time, Energy).\u00a0 It does not have a direction associated with it.\u00a0 A vector has both a number and a direction (velocity, acceleration, Force, 20 Newtons Left). Speed does not have a direction (scalar). Velocity does have a direction (vector). 5.5 m\/s\/s Every …<\/p>\n","protected":false},"author":2043,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-137","post","type-post","status-publish","format-standard","hentry","category-blogs"],"_links":{"self":[{"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/posts\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/users\/2043"}],"replies":[{"embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/comments?post=137"}],"version-history":[{"count":0,"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/posts\/137\/revisions"}],"wp:attachment":[{"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/media?parent=137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/categories?post=137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iblog.dearbornschools.org\/physicswithfoley\/wp-json\/wp\/v2\/tags?post=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}