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Speed Calculations

Speed Calculations. Speed Calculations. A cross-country runner runs 10 km in 40 minutes . What is his average speed?. Given. Given. F. Formula. Work. Answer. Speed Calculations. A cross-country runner runs 10 km in 40 minutes . What is his average speed?. Given. Given. F.

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Speed Calculations

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  1. Speed Calculations

  2. Speed Calculations • A cross-country runner runs 10 km in 40 minutes. What is his average speed? Given Given F Formula Work Answer

  3. Speed Calculations • A cross-country runner runs 10 km in 40 minutes. What is his average speed? Given Given F Formula Work Answer Look for what is given.

  4. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km

  5. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min

  6. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min What does the problem ask for?

  7. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min

  8. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min What formula will you use to find the answer?

  9. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t

  10. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t Now, plug in the given values into the formula.

  11. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t s = 10 km / 40 min.

  12. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t s = 10 km / 40 min. And solve!

  13. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t s = 10 km / 40 min. s = 0.25 km/min * 60 min. / hr =

  14. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t s = 10 km / 40 min. s = 0.25 km/min * 60 min. / hr = Write the answer in the answer section. Do not forget the units!

  15. Speed Calculations • A cross-country runner runs 10 kmin 40 minutes. What is his average speed? Given Given F Formula Work Answer d = 10 km t = 40 min s = d/t s = 10 km / 40 min. s = 0.25 km/min * 60 min. / hr = 15 km/hr

  16. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer

  17. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer Look for what is given.

  18. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr

  19. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr

  20. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs

  21. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs What does the problem ask for?

  22. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs

  23. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs What formula is required to find the answer?

  24. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs a=(vf-vi)/t

  25. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs a=(vf-vi)/t Now, plug in the values and solve!

  26. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs a=(vf-vi)/t a=(75 km/hr – 48 km/hr) / 27 hrs

  27. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs a=(vf-vi)/t a=(75 km/hr – 48 km/hr) / 27 hrs a= 27km/hr / 27 hr = 1 km/hr2

  28. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs a=(vf-vi)/t a=(75 km/hr – 48 km/hr) / 27 hrs a= 27km/hr / 27 hr = 1 km/hr2 Write the answer in the answer section. Do not forget the units!

  29. Acceleration Calculations • Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs. Given Given F Formula Work Answer vi=48 km/hr vf= 75 km/hr t = 27 hrs a=(vf-vi)/t a=(75 km/hr – 48 km/hr) / 27 hrs a= 27km/hr / 27 hr = 1 km/hr2 a=1 km/hr2

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