Mrs. Reynolds
About twenty percent of the National FootballLeague weighs more than 300 pounds. At thisweight, their Body Mass Index (BMI...
About twenty percent of the National FootballLeague weighs more than 300 pounds. At thisweight, their Body Mass Index (BMI...
According to the National Center for HealthStatistics, the average mass of an adultAmerican male is 86 kg. Determine the m...
According to the National Center for HealthStatistics, the average mass of an adultAmerican male is 86 kg. Determine the m...
According to the National Center for HealthStatistics, the average mass of an adultAmerican male is 86 kg. Determine the m...
a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to27 m/s (60 mph) in 10.0 seconds.b. Deter...
a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to27 m/s (60 mph) in 10.0 seconds. m = 540...
a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to 27m/s (60 mph) in 10.0 seconds. m = 540...

a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to 27m/s (60 mph) in 10.0 seconds. m = 540...
b. Determine the net force required toaccelerate a 2160-kg Ford Expedition from 0to 27 m/s (60 mph) in 10.0 seconds. m = 2...

b. Determine the net force required toaccelerate a 2160-kg Ford Expedition from 0 to27 m/s (60 mph) in 10.0 seconds. m = 2...
The Top Thrill Dragster stratacoaster at CedarPoint Amusement Park in Ohio uses a hydrauliclaunching system to accelerate ...

The Top Thrill Dragster stratacoaster at CedarPoint Amusement Park in Ohio uses a hydrauliclaunching system to accelerate ...
 Blake is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day with a force of...
 Blake  is dragging a bag of grass from the  garage to the street on the evening before  garbage pick-up day with a force...
Silas and Ivey are members of the stage crewfor the Variety Show. Between acts, they mustquickly move a Baby Grand Piano o...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences...
Phy cc 10 17-12-unit 5b_help_session_pub
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Phy cc 10 17-12-unit 5b_help_session_pub

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Slides from the Help Session going over the Study Guide for Unit 5.

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Phy cc 10 17-12-unit 5b_help_session_pub

  1. 1. Mrs. Reynolds
  2. 2. About twenty percent of the National FootballLeague weighs more than 300 pounds. At thisweight, their Body Mass Index (BMI) placesthem at Grade 2 obesity, which is one stepbelow morbid obesity. Determine the mass of a300 pound (1330 N) football player.
  3. 3. About twenty percent of the National FootballLeague weighs more than 300 pounds. At thisweight, their Body Mass Index (BMI) placesthem at Grade 2 obesity, which is one stepbelow morbid obesity. Determine the mass of a300 pound (1330 N) football player. Fg = 300 lb. = 1330 N Fg = mg g = 9.8 m/s^2 m = Fg/g m=? m = 1330 N/9.8 m/s^2 m = 136 kg
  4. 4. According to the National Center for HealthStatistics, the average mass of an adultAmerican male is 86 kg. Determine the massand the weight of an 86-kg man on the moonwhere the gravitational field is one-sixth that ofthe Earth. mearth = 86 kg Gmoon = (1/6)g = (1/6)*(9.8) mmoon = ? Fg moon = ?
  5. 5. According to the National Center for HealthStatistics, the average mass of an adultAmerican male is 86 kg. Determine the massand the weight of an 86-kg man on the moonwhere the gravitational field is one-sixth that ofthe Earth. mearth = 86 kg mass doesn’t change Gmoon = (1/6)g so mmoon = 86 kg = (1/6)*(9.8) mmoon = ? Fg moon = ?
  6. 6. According to the National Center for HealthStatistics, the average mass of an adultAmerican male is 86 kg. Determine the massand the weight of an 86-kg man on the moonwhere the gravitational field is one-sixth that ofthe Earth. mearth = 86 kg Fg moon = mmoon Gmoon Gmoon = (1/6)g Fg moon = (86)(9.8/6) = (1/6)*(9.8)Fg moon = 140 N mmoon = ? Fg moon = ?
  7. 7. a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to27 m/s (60 mph) in 10.0 seconds.b. Determine the net force required toaccelerate a 2160-kg Ford Expedition from 0to 27 m/s (60 mph) in 10.0 seconds.
  8. 8. a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to27 m/s (60 mph) in 10.0 seconds. m = 540 kg vi = 0 vf = 27 m/s t = 10.0 s Fnet = ?
  9. 9. a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to 27m/s (60 mph) in 10.0 seconds. m = 540 kg To find Fnet we need vi = 0 mass and accel. We vf = 27 m/s have mass, but not accel. t = 10.0 s So we need to find accel. Fnet = ?
  10. 10.
  11. 11. a. Determine the net force required toaccelerate a 540-kg ultralight car from 0 to 27m/s (60 mph) in 10.0 seconds. m = 540 kg Fnet = ma vi = 0 Fnet = (540 kg)(2.7 m/s^2) vf = 27 m/s Fnet = 1458 N t = 10.0 s a = 2.7 m/s^2 Fnet = ?
  12. 12. b. Determine the net force required toaccelerate a 2160-kg Ford Expedition from 0to 27 m/s (60 mph) in 10.0 seconds. m = 2160 kg vi = 0 vf = 27 m/s t = 10.0 s Fnet = ?
  13. 13.
  14. 14. b. Determine the net force required toaccelerate a 2160-kg Ford Expedition from 0 to27 m/s (60 mph) in 10.0 seconds. m = 2160 kg Fnet = ma vi = 0 Fnet = (2160 kg)(2.7 m/s^2) vf = 27 m/s Fnet = 5832 N t = 10.0 s a = 2.7 m/s^2 Fnet = ?
  15. 15. The Top Thrill Dragster stratacoaster at CedarPoint Amusement Park in Ohio uses a hydrauliclaunching system to accelerate riders from 0 to 54m/s (120 mi/hr) in 3.8 seconds before climbing acompletely vertical 420-foot hill . Determine the netforce required to accelerate an 86-kg man.vi = 0 m/s Fnet = ?vf = 54 m/st = 3.8 s To find Fnet we need to findd = 420 ft acceleration.m = 86 kg
  16. 16.
  17. 17. The Top Thrill Dragster stratacoaster at CedarPoint Amusement Park in Ohio uses a hydrauliclaunching system to accelerate riders from 0 to 54m/s (120 mi/hr) in 3.8 seconds before climbing acompletely vertical 420-foot hill . Determine the netforce required to accelerate an 86-kg man.vi = 0 m/s Fnet = ?vf = 54 m/st = 3.8 sd = 420 ftm = 86 kga = 14.2 m/s^2
  18. 18.  Blake is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day with a force of 40.2 N. The frictional force between the bag and the ground is 5.7 N. What is the net force acting on the bag?
  19. 19.  Blake is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day with a force of 40.2 N. The frictional force between the bag and the ground is 5.7 N. What is the net force acting on the bag?5.7 N 40.2 N
  20. 20. Silas and Ivey are members of the stage crewfor the Variety Show. Between acts, they mustquickly move a Baby Grand Piano onto stage.After the curtain closes, they exert a suddenforward force of 524 N to budge the piano fromrest and get it up to speed. The 158-kg pianoexperiences 418 N of friction. a. What is the pianos acceleration during this phase of its motion? b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have?
  21. 21. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. a. What is the pianos acceleration during this phase of its motion? F1 = 524 N forward F2 = 418 N backward m = 158 kg a=? 418 N 524 N
  22. 22. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. a. What is the pianos acceleration during this phase of its motion? F1 = 524 N forward Fnet = 524 N – 418 N = 106 N F2 = 418 N backward m = 158 kg a=? 418 N 524 N
  23. 23. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. a. What is the pianos acceleration during this phase of its motion? F1 = 524 N forward Fnet = 524 N – 418 N = 106 N F2 = 418 N backward Fnet = ma, so a = Fnet/m m = 158 kg a = (106 N)/(158 kg) a=? a = 0.671 m/s^2
  24. 24. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have?
  25. 25. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have? a = 0.671 m/s^2 t = 1.44 s
  26. 26. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have? a = 0.671 m/s^2 t = 1.44 s vi = 0 m/s vf = ?
  27. 27. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have? a = 0.671 m/s^2 t = 1.44 s vi = 0 m/s vf = ?
  28. 28. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have? a = 0.671 m/s^2 vf = vi + at t = 1.44 s vi = 0 m/s vf = ?
  29. 29. They exert a sudden forward force of 524 N tobudge the piano from rest and get it up tospeed. The 158-kg piano experiences 418 N offriction. b. If Silas and Ivey maintain this forward force for 1.44 seconds, then what speed will the piano have? a = 0.671 m/s^2 vf = vi + at t = 1.44 s vf = 0 + (0.671 m/s^2)(1.44 s) vi = 0 m/s vf = 0.966 m/s vf = ?

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