Calculating Kinetic Energy, Power & Resistive Force of an Amphibious Vehicle

Click For Summary

Homework Help Overview

The discussion revolves around calculating kinetic energy, power, and resistive forces for a 5000kg amphibious vehicle that accelerates on land and then operates in water. The original poster presents specific calculations and expresses uncertainty about the concept of resistive force.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate kinetic energy and power but questions the meaning of resistive force. Some participants clarify the concept of constant velocity, while others inquire about its implications for net force.

Discussion Status

The discussion is ongoing, with participants exploring the definitions and implications of resistive force and net force in the context of the vehicle's motion. There is no explicit consensus, but clarification on key concepts is being sought.

Contextual Notes

The original poster indicates a lack of understanding regarding resistive force and seeks further explanation, suggesting that foundational concepts may need to be addressed.

SalsaOnMyTaco
Messages
32
Reaction score
0

Homework Statement


On Land, a 5000kg amphibious vehicle can accelerate from rest to 10 m/s in 25 sec.


Find...
a)Final Kinetic Energy?
-250,000
b)Avg Power furnished by engine during acceleration?
-10,000
c)If the same power is required to propel the vehicle through water at a constant 2 m/s, What is the magnitude of the resistive force being overcome?

The attempt at a solution
I haven't learn or don't know what is the meaning of Resistive Force, I tried searching for a formula online but they do not make sense.
 
Physics news on Phys.org
This is a force that resists the motion. What does constant velocity mean?
 
speed remains the same, it does not increase or decrease
 
Yes, but what does that mean regarding the net force acting on the vehicle?
 
instantaneous acceleration?
 

Similar threads

Resistance force changing the velocity of an object
  • · Replies 8 ·
Replies
8
Views
1K
Mechanics (Power): Calculate Horizontal Resistive Force
  • · Replies 6 ·
Replies
6
Views
3K
Torque needed to accelerate rail-mounted vehicle
  • · Replies 7 ·
Replies
7
Views
2K
Need help - Force required for accelerating vehicle
  • · Replies 6 ·
Replies
6
Views
2K
Momentum & Kinetic Energy: Solve for Force
  • · Replies 8 ·
Replies
8
Views
2K
How Do You Graph Kinetic Energy Against Time and Distance?
  • · Replies 6 ·
Replies
6
Views
5K
Circular Motion Questions (energies, forces, angular velocities, etc.)
  • · Replies 2 ·
Replies
2
Views
2K
Total power developed and kinetic energy
  • · Replies 2 ·
Replies
2
Views
2K
Calculate the Kinetic Frictional Force
  • · Replies 1 ·
Replies
1
Views
3K
Closest distance of approach between 2 charged particles
  • · Replies 5 ·
Replies
5
Views
1K