A roller coaster (404 kg) moves from A (3.13 m above the ground) to B (21.6...
A roller coaster (404 kg) moves from A (3.13 m above the ground) to B (21.6 m above the ground). Two non-conservative forces are present: friction does -2.37 x 104 J of work on the car, and a chain mechanism does +5.76 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KEf - KEo from A to B?
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A roller coaster (404 kg) moves from A (3.13 m above the ground)
to B (21.6...
A roller coaster (390 kg) moves from A (4.96 m above the ground) to B (20.9...
A roller coaster (390 kg) moves from A (4.96 m above the ground) to B (20.9 m above the ground). Two non-conservative forces are present: friction does -1.86 x 104 J of work on the car, and a chain mechanism does +5.66 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KEf - KEo from A to B?
A car of mass 500. kg on a roller coaster ride is raised from the ground...
A car of mass 500. kg on a roller coaster ride is raised from
the ground (horizontal dotted line) to point A as shown in the
diagram above. When the car passes point A, its speed is 5.0 m/s,
and then it rolls freely through the rest of the ride with
negligible friction, passing points B, C, D and E. Note that point
D is the highest portion of a circular loop, and point E is the
lowest portion of...
c) 353 J 13. A 200 kg roller coaster starts from 50 m above the ground....
c) 353 J 13. A 200 kg roller coaster starts from 50 m above the ground. (a) 5 It falls toward the ground with out any friction then once it ((c) reaches the ground level, the brakes are applied over 30 m 19. A in order to bring the coaster to a complete stop. How much ms-1 work is done by the brakes? 20 N (a) 10 x10 J (c)-10 x10 J 14. A 7 kg ball is dropped from...
4. A roller-coaster car with a mass of 250 kg carries a 75 kg passenger and...
4. A roller-coaster car with a mass of 250 kg carries a 75 kg passenger and starts from rest from a point 20 m above the ground. At point C, it is 15 m above the ground. A. What is the initial potential energy of the car (in kJ) at point A? - 75 kg 250. kg B. What is the potential energy at point B? C. If the initial kinetic energy was zero and the work done against friction...
chapter 6 e16 not in the app? 122 Chapter 6 Energy and Oscillations point A. What...
chapter 6 e16 not in the app?
122 Chapter 6 Energy and Oscillations point A. What is the kinetic energy of the roller coaster this low point? E16. A roller-coaster car with a mass of 1200 kg starts at r from a point 20 m above the ground. At point B, it is above the ground. [Express your answers in kilojoules (k a. What is the initial potential energy of the car? b. What is the potential energy at point...
1. A roller coaster has a 300 kg car. Assume the track is frictionless. a) The...
1. A roller coaster has a 300 kg car. Assume the track is frictionless. a) The car starts at a speed 20 m/s on a horizontal track. It then goes through a circular loop. What is the speed of the car when it is at the top of the loop, h = 10 m above the horizontal track? b) What is the normal force applied from the track at the point? Does this force point upward or downward? Assume the...
Recitation Work - 5 In order to get full credit, you need to show all your...
Recitation Work - 5 In order to get full credit, you need to
show all your work.
question 1.
A force Fx = cx^3 (c = 3.0 N/m^3) acts on an object with mass 40
kg that is sliding along a rough horizontal floor (x-axis) with
coefficient of kinetic friction of 0.2. A) What is the work done by
the force Fx on this object as it slides from x1 = 0.0 m to x2 =
6.0 m?
B) What...
10. Assuming the skater is release from rest at point A which is 6.00 m above...
10. Assuming the skater is release from rest at point A which is 6.00 m above the ground, use the conservation of mechanical energy calculate the speed the of the skater at B, C, and D. (Show all work) 200 After you have completed the track, right click the track and put the simulation in roller coaster mode. Then use the Energy vs Time graph, like the graph above for the 75.0 kg skater, to estimate the following: 1. Kinetic...
A ball of soft clay with mass 1 kg falls from a height of 10 m...
A ball of soft clay with mass 1 kg falls from a height of 10 m starting at rest. When the clay hits the ground it flattens and comes to a stop. Which of the following is true? Gravity does work on the ball equal to 980 J, and all this energy is dissipated during the deformation of the ball on impact. Gravity does work on the ball equal to 98 J, and all of this energy is dissipated during...
A toy elevator is raised from the ground floor to the second floor in 20 seconds....
A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power need using 1000 J of work, is 20,000 W. 100 W. 50 W. 1000 W. 20 W. It is correct to say that impulse is equal to a corresponding change In momentum. force multiplied by the distance it act velocity multiplied by time. momentum. A skydiver steps from a helicopter and falls for a few seconds until terminal velocity is reach Thereafter,...
A car of mass 500. kg on a roller coaster ride is raised from
the ground (horizontal dotted line) to point A as shown in the
diagram above. When the car passes point A, its speed is 5.0 m/s,
and then it rolls freely through the rest of the ride with
negligible friction, passing points B, C, D and E. Note that point
D is the highest portion of a circular loop, and point E is the
lowest portion of...
c) 353 J 13. A 200 kg roller coaster starts from 50 m above the ground. (a) 5 It falls toward the ground with out any friction then once it ((c) reaches the ground level, the brakes are applied over 30 m 19. A in order to bring the coaster to a complete stop. How much ms-1 work is done by the brakes? 20 N (a) 10 x10 J (c)-10 x10 J 14. A 7 kg ball is dropped from...
4. A roller-coaster car with a mass of 250 kg carries a 75 kg passenger and starts from rest from a point 20 m above the ground. At point C, it is 15 m above the ground. A. What is the initial potential energy of the car (in kJ) at point A? - 75 kg 250. kg B. What is the potential energy at point B? C. If the initial kinetic energy was zero and the work done against friction...
chapter 6 e16 not in the app?
122 Chapter 6 Energy and Oscillations point A. What is the kinetic energy of the roller coaster this low point? E16. A roller-coaster car with a mass of 1200 kg starts at r from a point 20 m above the ground. At point B, it is above the ground. [Express your answers in kilojoules (k a. What is the initial potential energy of the car? b. What is the potential energy at point...
1. A roller coaster has a 300 kg car. Assume the track is frictionless. a) The car starts at a speed 20 m/s on a horizontal track. It then goes through a circular loop. What is the speed of the car when it is at the top of the loop, h = 10 m above the horizontal track? b) What is the normal force applied from the track at the point? Does this force point upward or downward? Assume the...
Recitation Work - 5 In order to get full credit, you need to
show all your work.
question 1.
A force Fx = cx^3 (c = 3.0 N/m^3) acts on an object with mass 40
kg that is sliding along a rough horizontal floor (x-axis) with
coefficient of kinetic friction of 0.2. A) What is the work done by
the force Fx on this object as it slides from x1 = 0.0 m to x2 =
6.0 m?
B) What...
10. Assuming the skater is release from rest at point A which is 6.00 m above the ground, use the conservation of mechanical energy calculate the speed the of the skater at B, C, and D. (Show all work) 200 After you have completed the track, right click the track and put the simulation in roller coaster mode. Then use the Energy vs Time graph, like the graph above for the 75.0 kg skater, to estimate the following: 1. Kinetic...
A ball of soft clay with mass 1 kg falls from a height of 10 m starting at rest. When the clay hits the ground it flattens and comes to a stop. Which of the following is true? Gravity does work on the ball equal to 980 J, and all this energy is dissipated during the deformation of the ball on impact. Gravity does work on the ball equal to 98 J, and all of this energy is dissipated during...
A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power need using 1000 J of work, is 20,000 W. 100 W. 50 W. 1000 W. 20 W. It is correct to say that impulse is equal to a corresponding change In momentum. force multiplied by the distance it act velocity multiplied by time. momentum. A skydiver steps from a helicopter and falls for a few seconds until terminal velocity is reach Thereafter,...
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