Understanding Deceleration: Investigating the Force and Energy Changes on a Ship

In summary: What is the main energy change as the ship slows downThe main energy change is that the potential energy of the ship is converted to kinetic energy.
  • #1
risa
1
0

Homework Statement


1.If the ship has a mass of 2.5 x 10^7 kg calculate the magnitude of the force acting on the ship during the deceleration.

I was trying to work that out using f=ma but that would
Make the force negative , is that possible

2. What is the nature of the force acting on the ship which leads to the deceleratipn and how does it cause the ship to slow down?

Could someone please explain how to do this one please and I also have no idea what "nature of a force" is

3. What is the main energy change as the ship slows down

Is the answer from kinetic to potential?

Homework Equations

The Attempt at a Solution

 

Attachments

  • 1454242781267754334836.jpg
    1454242781267754334836.jpg
    28.1 KB · Views: 408
Physics news on Phys.org
  • #2
risa said:

Homework Statement


1.If the ship has a mass of 2.5 x 10^7 kg calculate the magnitude of the force acting on the ship during the deceleration.

I was trying to work that out using f=ma but that would
Make the force negative , is that possible
If the ship is decelerating, the force has to be in the opposite direction from the direction it is moving. So the force is negative.
2. What is the nature of the force acting on the ship which leads to the deceleratipn and how does it cause the ship to slow down?
The problem doesn't tell you what's causing the force. Maybe its a tug boat pulling back on the ship with a rope.
3. What is the main energy change as the ship slows down

Is the answer from kinetic to potential?
What's your understanding of the terms kinetic energy and potential energy?
 
  • #3
the force would be negative so the answer is 12.5 x 10^4 N
the force acting on the ship slowing it down is friction as the base of the ship is rubbing against the surface of the ocean.
not sure of the energy change though. i know its kinetic to something else...if you get the answer post it please
 
  • #4
risa said:
2. What is the nature of the force acting on the ship which leads to the deceleratipn and how does it cause the ship to slow down?
"Nature" might refer to the source of the force, its characteristics, or both.
Look at the statement at the very top of the attachment. What does it say?
Look at the shape of the graph. What does it tell you about the deceleration? What does that tell you about the force?
 

1. What is force and energy change?

Force and energy change refers to the process by which an object's motion is affected by a push or pull (force) and how that affects the object's energy. Force and energy change are closely related and can be seen in everyday phenomena such as a ball rolling down a hill or a rocket launching into space.

2. How is force and energy change measured?

Force is measured in units called Newtons (N), and energy is measured in units called joules (J). Both force and energy can be measured using scientific instruments such as force gauges or energy meters. These measurements help us understand the amount and direction of force applied to an object and how it affects the object's energy.

3. What are the different types of forces that can cause energy change?

There are four fundamental forces that can cause energy change: gravitational force, electromagnetic force, strong nuclear force, and weak nuclear force. These forces can act on an object in various ways, such as pulling, pushing, or changing the object's direction of motion, resulting in a change in energy.

4. How does energy change affect an object's motion?

When an object experiences a change in energy, it can result in a change in its motion. For example, if a ball is rolling down a hill, its potential energy decreases as it gains kinetic energy, causing it to speed up. Similarly, if a force acts in the opposite direction of an object's motion, it can decrease its kinetic energy, causing it to slow down or stop.

5. Why is understanding force and energy change important?

Understanding force and energy change is crucial in many scientific fields, such as physics and engineering. It helps us predict and explain how objects will move and interact with each other. This knowledge is also essential in developing technologies that use energy, such as electricity and transportation. Additionally, understanding force and energy change can help us better understand the world around us and how natural phenomena occur.

Similar threads

Friction and an object stopping
    • Introductory Physics Homework Help
Replies
12
Views
1K
Is potential energy defined only for internal conservative forces?
    • Introductory Physics Homework Help
Replies
15
Views
328
Fluid Forces in a Manometer: Understanding Pressure and Kinetic Energy
    • Introductory Physics Homework Help
Replies
2
Views
675
Force and change in momentum in an inelastic/elastic collision
    • Introductory Physics Homework Help
Replies
19
Views
2K
A ship stops suddenly - Forces acting on the cargo?
    • Mechanics
Replies
28
Views
1K
Time period of SHM & Energy conservation in pulley-spring-block system
    • Introductory Physics Homework Help
Replies
24
Views
998
How far will the ship travel after the engine stops?
    • Introductory Physics Homework Help
Replies
4
Views
1K
What is the energy conservation principle in a two masses and pulley problem?
    • Introductory Physics Homework Help
Replies
33
Views
3K
What is the temperature change of a bullet upon impact?
    • Introductory Physics Homework Help
Replies
28
Views
2K
Ship Bobbing in the Ocean (Frequency Problem)
    • Introductory Physics Homework Help
Replies
5
Views
2K

Hot Threads

Recent Insights

Back
Top