303 Outline and Problems:
  • Write all answers in your bound journal
  • Make it NEAT and in COMPLETE SENTENCES, clearly identify which section you are working (using numbers)
  • Box final answers if doing math.
  • -4pt if you do not title and date the entry
  • -1pt (per infraction) if you do not clearly identify the sections, or number the problems

 

 
Section 2 (21 pts)
 
  1. What is energy?
  2. provide 3 examples of energy?
  3. What is a joule?
  4. How does a food Calorie compare to a Joule?
  5. What is the physics definition for work?
  6. What is equation for work?
  7. 500N force applied over 10m requires how much work (SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH).?
  8. How many food Calories would you have burned in the previous question?
  9. How far would you have to travel (at 500N force) to burn off a 153 calorie snack bag of Cheetos (SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH).?
  10. An object that has __________is able to do work; without _________, it is impossible to do work.
  11. What is potential energy?
  12. The term _________ _____________ _________________describes the energy of an elevated object.
  13. What is the equation used for the previous question, and what do the letters signify?
  14. What is energy of motion called?
  15. What is the equation for energy of motion, and what do the letters symbolize?
  16. A 2 kg rock is at the edge of a cliff 20 meters above a lake. It becomes loose and falls toward the water below. Calculate its potential and kinetic energy when it is at the top and when it is halfway down. Its speed is 14 m/sec at the halfway point (SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH).
  17. Calculate the potential energy of a 4.35 kilogram cat crouched 3.44 meters off the ground (SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH).
  18. what would be the final velocity of the 4.35 kg cat, right before he hit the ground (hint D=1/2at2 and v=gt)(SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH).
  19. When the 4.35kg cat jumped from the 3.44m, his velocity right when he reached the ground was 8.21m/s. Calculate the kinetic energy (SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH).
  20. Problems 17 - 19 illustrate what amazing law in physics, and give its definition?
  21. A 2.67 kg car moving with a speed of 4.35 m/sec starts up a hill. How high does the car roll before it stops (SHOW THE FORMULAS AND SHOW ALL OF YOUR MATH)?