A freight train has a mass of 1.1 x 10 kg. If the locomotive can exert a constant pull of 6.9 x 105 N, how long does it take to increase the speed of the train from rest to 86 km/h? min Need Help? Read It 9. DETAILS SERCP8 4.P.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The air exerts a forward force of 13 N on the propeller of a 0.30 kg model airplane. If the plane accelerates forward at 2.0 m/s, what is the magnitude of the resistive force exerted by the air on the airplane? Need Help? Read It
A freight train has a mass of 1.1 x 10 kg. If the locomotive can exert a constant pull of 6.9 x 105 N, how long does it take to increase the speed of the train from rest to 86 km/h? min Need Help? Read It 9. DETAILS SERCP8 4.P.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The air exerts a forward force of 13 N on the propeller of a 0.30 kg model airplane. If the plane accelerates forward at 2.0 m/s, what is the magnitude of the resistive force exerted by the air on the airplane? Need Help? Read It
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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![**Transcription:**
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A freight train has a mass of \(1.1 \times 10^7 \, \text{kg}\). If the locomotive can exert a constant pull of \(6.9 \times 10^5 \, \text{N}\), how long does it take to increase the speed of the train from rest to 86 km/h?
_Need Help?_ [Read it]
---
**Question 9:**
---
DETAILS: SERC 8 P 4.007
The air exerts a forward force of 13 N on the propeller of a 0.30 kg model airplane. If the plane accelerates forward at \(2.0 \, \text{m/s}^2\), what is the magnitude of the resistive force exerted by the air on the airplane?
___ N
_Need Help?_ [Read it]
---
**Options:**
- MY NOTES
- ASK YOUR TEACHER
- PRACTICE ANOTHER
---
**Explanation:**
The image appears to be a screenshot of a physics problem set, showing two separate problems related to mechanics:
1. **Freight Train Problem:**
- The problem involves a freight train, its mass, and a constant force exerted by the locomotive. The task is to calculate the time required to reach a certain velocity from rest.
2. **Model Airplane Problem:**
- This problem involves calculating the resistive force acting on a model airplane given its mass, the forward thrust, and its acceleration.
Both problems require an understanding of Newtonian mechanics, specifically the concepts of force, mass, acceleration, and the application of Newton's second law of motion (\(F = ma\)).
There are no graphs or diagrams associated with these problems in the image.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb5f65923-b5e6-4be3-9be2-727b112c89ca%2F05cb12a1-9c5b-4ec2-9c88-fc3720450c13%2Fc112jd_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Transcription:**
---
A freight train has a mass of \(1.1 \times 10^7 \, \text{kg}\). If the locomotive can exert a constant pull of \(6.9 \times 10^5 \, \text{N}\), how long does it take to increase the speed of the train from rest to 86 km/h?
_Need Help?_ [Read it]
---
**Question 9:**
---
DETAILS: SERC 8 P 4.007
The air exerts a forward force of 13 N on the propeller of a 0.30 kg model airplane. If the plane accelerates forward at \(2.0 \, \text{m/s}^2\), what is the magnitude of the resistive force exerted by the air on the airplane?
___ N
_Need Help?_ [Read it]
---
**Options:**
- MY NOTES
- ASK YOUR TEACHER
- PRACTICE ANOTHER
---
**Explanation:**
The image appears to be a screenshot of a physics problem set, showing two separate problems related to mechanics:
1. **Freight Train Problem:**
- The problem involves a freight train, its mass, and a constant force exerted by the locomotive. The task is to calculate the time required to reach a certain velocity from rest.
2. **Model Airplane Problem:**
- This problem involves calculating the resistive force acting on a model airplane given its mass, the forward thrust, and its acceleration.
Both problems require an understanding of Newtonian mechanics, specifically the concepts of force, mass, acceleration, and the application of Newton's second law of motion (\(F = ma\)).
There are no graphs or diagrams associated with these problems in the image.
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