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Energy Calculations

Energy Calculations. Energy Calculations. A cross-country runner massing 70 kg running at 4 m/s. What is his Kinetic Energy?. Given. Given. F. Formula. Work. Answer. Energy Calculations. A cross-country runner massing 70 kg running at 4 m/s. What is his Kinetic Energy?. Given. Given.

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Energy Calculations

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  1. Energy Calculations

  2. Energy Calculations • A cross-country runner massing 70 kg running at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer

  3. Energy Calculations • A cross-country runner massing 70 kg running at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer Look for what is given.

  4. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg

  5. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s

  6. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s What does the problem ask for?

  7. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s

  8. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s What formula will you use to find the answer?

  9. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2

  10. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2 Now, plug in the given values into the formula.

  11. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2 Ke=½*70kg*(4m/s)2

  12. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2 Ke=½*70kg*(4m/s)2 And solve!

  13. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2 Ke=½*70kg*(4m/s)2 Ke = 35 kg * 16 m2 / s2 =

  14. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2 Ke=½*70kg*(4m/s)2 Ke = 35 kg * 16 m2 / s2 = 560 kgm2/s2 Write the answer in the answer section. Do not forget the units!

  15. Energy Calculations • A cross-country runner massing 70 kgrunning at 4 m/s. What is his Kinetic Energy? Given Given F Formula Work Answer m = 70 kg v = 4 m/s Ke=½mv2 Ke=½*70kg*(4m/s)2 Ke = 35 kg * 16 m2 / s2 = 560 kgm2/s2 560 J

  16. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer

  17. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer Look for what is given.

  18. Enefgy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg

  19. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m

  20. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m What does the problem ask for?

  21. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m

  22. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m What formula is required to find the answer?

  23. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m Gpe=m*g*h g= 9.8m/s2

  24. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m Gpe=m*g*h g= 9.8m/s2 Now, plug in the values and solve!

  25. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m Gpe=10 kg*9.8 m/s2*100 m Gpe=m*g*h g= 9.8m/s2

  26. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m Gpe=10 kg*9.8 m/s2*100 m Gpe= 9,800 kgm2/s2 Gpe=m*g*h g= 9.8m/s2

  27. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m Gpe=10 kg*9.8 m/s2*100 m Gpe= 9,800 kgm2/s2 Gpe=m*g*h g= 9.8m/s2 Write the answer in the answer section. Do not forget the units!

  28. Energy Calculations • Calculate the Gravitational Potential Energy of a rock that masses 10 kg at the edge of a cliff 100 meters above the ground. Given Given F Formula Work Answer m=10 kg h= 100 m Gpe=10 kg*9.8 m/s2*100 m Gpe= 9,800 kgm2/s2 Gpe=m*g*h Gpe = 9,800 J g= 9.8m/s2

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