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Download Chapter 9 Test Study Guide - Motion and Energy
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Chapter 9 Test Study Guide - Motion and Energy Name ________________________ Answer Bank – Answers may be used more than once and may need to be combined to answer a question =============================================================================== Acceleration deceleration direction distance Energy final gravity gravitational Initial kinetic mass magnitude Mechanical meter(s) Potential second(s) Time vector Velocity Work Centidecidekahectokilomilli0.001 0.01 0.1 10 100 1000 1/4 1/2 1/8 3/4 5/8 7/8 2 4 6 8 Squared cubed added to (+) minus (-) Multiplied by (x) Divided by (÷) 3 9.8 m/s/s 1.0 g/cm =============================================================================== 1. Stored energy is called ________________________ energy. 2. Negative acceleration is called ______________________ 3. A kilometer is equal to ______________________ meters 4. The ability to do work is called __________________ 5. A centimeter is equal to ___________________ meters 6. The metric unit for time is the _____________________ 7. A vector is an arrow that shows both _______________________and ___________________________ 8. The rate at which the velocity of an object changes is called ______________________ 9. The formula for speed is _______________________________________________________________ 10. Moving energy is called ________________________ energy. 11. A millimeter is equal to ______________________ meters 12. The metric unit for energy is the _____________________ 13. The rate at which the velocity of an object changes is called ______________________ 14. The formula for acceleration is __________________________________________________________ 15. A hectometer is equal to _______________________ meters 16. The formula for kinetic energy is ___________________________________________ 17. The formula for gravitational potential energy is ______________________________________ 18. The formula for mechanical energy is _________________________________________________ 19. What is the formula for weight? ____________________________________________________ 20. What is the numerical value for the acceleration due to gravity on Earth? __________________ MATCH THE FOLLOWING UNITS TO THEIR APPROPRIATE QUANTITY 21. Kg _______________ h _________________ m/s _______________ 22. N________________ mm ________________ Min ___________________ 23. m/s/s _____________ kg*m2/s2 ________________ Km/h north ______________ 24. m ________________ s _______________ N*M ___________________ 25. J _________________ Km/h/s________________ g ___________________ a. distance e. kinetic or potential energy b. acceleration f. velocity c. speed g. weight d. mass h. time SOLVE THE FOLLOWING PROBLEMS. TO GET FULL CREDIT YOU MUST SHOW THE FORMULA YOU ARE USING, THE GIVEN VALUES, THE SETUP OF THE PROBLEM, THE CORRECT ANSWER AND THE PROPER UNITS Round off your answers to 2 decimal places 26. A car traveling at 75.5 Km/h encounters an emergency and comes to a complete stop. How much time will it take for the car to stop if it accelerates at -6.4 Km/h/s? 27. A 325.19 Kg ball is traveling 8.24 m/s, what is its kinetic energy? 28. A cart is rolling down a hill for 7.1 seconds; it has an acceleration of 5.2 m/s2. If the cart has a beginning speed of 3.1 m/s, what is its final speed? 29. A 75 N rock is lifted 8.2 m in the air, what is its Gravitational potential energy? 30. Suppose you ride your skateboard to the library traveling at 0.62 km/min. It takes you 23 minutes to get to the library. How far did you travel? 31. You ride your bike for 23 minutes. You traveled 92.3 km, what is your speed? 32. Jonathan’s mother drives 18.3 km southwest to her favorite shopping mall. What is the velocity of her automobile if she arrives at the mall in 9.7 minutes? 33. An airplane travels 6,741 kilometers in 6.3 hours. What is the airplane’s average speed? 34. After 23.5 minutes a car is traveling at 117.5 km/h, it has been accelerating at 5m/s/s, what was its initial speed? 35. A 492 Kg ball rolling down a hill 6150 J of energy, how fast is it traveling? 36. A 83 N rock is sitting on the edge of a cliff has 70982.71 J of energy, how high is the cliff? 37. You ride your bike for a distance of 246 km. You travel at a speed of 0.47 km/ minute. How many minutes does this take?