An airboat with mass 960 kg, including the passengers, has a propeller that produces a driving horizontal force F₂ = 1680 N and water produces an average water resistance force FD=864 N as shown in the figure. What is the acceleration of the boat measured in m/s²?

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)...
icon
Related questions
Question
### Question 2-a, Numerical:

An airboat with mass 960 kg, including the passengers, has a propeller that produces a driving horizontal force \( F_p = 1680 \) N and water produces an average water resistance force \( F_D = 864 \) N as shown in the figure.

![Airboat Image](#)

**Explanation of the Image:**
The image shows an airboat with a group of people on it. The boat has a large propeller at the back that produces a driving force \( F_p \), indicated by a yellow arrow pointing in the direction of the boat's movement. There is also a red arrow pointing in the opposite direction, representing the water resistance force \( F_D \).

**Question:**
What is the acceleration of the boat measured in m/s²?

---

**Solution:**
To find the acceleration of the boat, we can apply Newton's second law of motion:

\[ F_{net} = m \cdot a \]

Where \( F_{net} \) is the net force on the boat, \( m \) is the mass of the boat, and \( a \) is the acceleration of the boat.

First, calculate the net force \( F_{net} \):

\[ F_{net} = F_p - F_D \]
\[ F_{net} = 1680 \, \text{N} - 864 \, \text{N} \]
\[ F_{net} = 816 \, \text{N} \]

Next, solve for the acceleration \( a \):

\[ a = \frac{F_{net}}{m} \]
\[ a = \frac{816 \, \text{N}}{960 \, \text{kg}} \]
\[ a = 0.85 \, \text{m/s}^2 \]

The acceleration of the boat is \( 0.85 \, \text{m/s}^2 \).

---
Transcribed Image Text:### Question 2-a, Numerical: An airboat with mass 960 kg, including the passengers, has a propeller that produces a driving horizontal force \( F_p = 1680 \) N and water produces an average water resistance force \( F_D = 864 \) N as shown in the figure. ![Airboat Image](#) **Explanation of the Image:** The image shows an airboat with a group of people on it. The boat has a large propeller at the back that produces a driving force \( F_p \), indicated by a yellow arrow pointing in the direction of the boat's movement. There is also a red arrow pointing in the opposite direction, representing the water resistance force \( F_D \). **Question:** What is the acceleration of the boat measured in m/s²? --- **Solution:** To find the acceleration of the boat, we can apply Newton's second law of motion: \[ F_{net} = m \cdot a \] Where \( F_{net} \) is the net force on the boat, \( m \) is the mass of the boat, and \( a \) is the acceleration of the boat. First, calculate the net force \( F_{net} \): \[ F_{net} = F_p - F_D \] \[ F_{net} = 1680 \, \text{N} - 864 \, \text{N} \] \[ F_{net} = 816 \, \text{N} \] Next, solve for the acceleration \( a \): \[ a = \frac{F_{net}}{m} \] \[ a = \frac{816 \, \text{N}}{960 \, \text{kg}} \] \[ a = 0.85 \, \text{m/s}^2 \] The acceleration of the boat is \( 0.85 \, \text{m/s}^2 \). ---
### Question 2-b, Numerical:

An airboat with a mass of 960 kg, including the passengers, has a propeller that produces a driving horizontal force \( F_p = 1680 \, \text{N} \), and the water produces an average water resistance force \( F_D = 864 \, \text{N} \) as shown in the figure.

![Image of Airboat](image_link)

The image shows an airboat with a propeller on the water. The driving force, \( F_p \), is indicated with a yellow arrow pointing forward, and the water resistance force, \( F_D \), is denoted with a red arrow pointing backward.

**Question:**
How long does it take (measured in seconds) to accelerate the airboat from rest to a speed of 12 m/s?

---

For educational purposes, this problem requires the application of Newton's Second Law of Motion to find the net force acting on the airboat and subsequently using kinematic equations to find the time taken to reach the given speed.

Steps to solve:
1. Calculate the net force acting on the airboat.
2. Use the net force to determine the acceleration.
3. Apply the kinematic equation to find the time taken to reach the speed of 12 m/s from rest.

### Solution:

1. **Calculate the Net Force:**

\[ F_{\text{net}} = F_p - F_D \]
\[ F_{\text{net}} = 1680 \, \text{N} - 864 \, \text{N} \]
\[ F_{\text{net}} = 816 \, \text{N} \]

2. **Determine the Acceleration:**

Using Newton's Second Law:
\[ F = ma \]

\[ a = \frac{F_{\text{net}}}{m} \]
\[ a = \frac{816 \, \text{N}}{960 \, \text{kg}} \]
\[ a = 0.85 \, \text{m/s}^2 \]

3. **Find the Time Using Kinematic Equation:**

Using the equation:
\[ v = u + at \]

Where:
\( v \) = final velocity = 12 m/s
\( u \) = initial velocity = 0 m/s (from rest)
\( a \) = acceleration = 0.85 m/s²

\[ 12 \,
Transcribed Image Text:### Question 2-b, Numerical: An airboat with a mass of 960 kg, including the passengers, has a propeller that produces a driving horizontal force \( F_p = 1680 \, \text{N} \), and the water produces an average water resistance force \( F_D = 864 \, \text{N} \) as shown in the figure. ![Image of Airboat](image_link) The image shows an airboat with a propeller on the water. The driving force, \( F_p \), is indicated with a yellow arrow pointing forward, and the water resistance force, \( F_D \), is denoted with a red arrow pointing backward. **Question:** How long does it take (measured in seconds) to accelerate the airboat from rest to a speed of 12 m/s? --- For educational purposes, this problem requires the application of Newton's Second Law of Motion to find the net force acting on the airboat and subsequently using kinematic equations to find the time taken to reach the given speed. Steps to solve: 1. Calculate the net force acting on the airboat. 2. Use the net force to determine the acceleration. 3. Apply the kinematic equation to find the time taken to reach the speed of 12 m/s from rest. ### Solution: 1. **Calculate the Net Force:** \[ F_{\text{net}} = F_p - F_D \] \[ F_{\text{net}} = 1680 \, \text{N} - 864 \, \text{N} \] \[ F_{\text{net}} = 816 \, \text{N} \] 2. **Determine the Acceleration:** Using Newton's Second Law: \[ F = ma \] \[ a = \frac{F_{\text{net}}}{m} \] \[ a = \frac{816 \, \text{N}}{960 \, \text{kg}} \] \[ a = 0.85 \, \text{m/s}^2 \] 3. **Find the Time Using Kinematic Equation:** Using the equation: \[ v = u + at \] Where: \( v \) = final velocity = 12 m/s \( u \) = initial velocity = 0 m/s (from rest) \( a \) = acceleration = 0.85 m/s² \[ 12 \,
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Nonconservative forces
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON