Solve problem related to Force and velocity

  • Thread starter Thread starter rainingurl
  • Start date Start date
  • Tags Tags
    Force Velocity
AI Thread Summary
A 2 kg package is pushed across a frictionless floor by a constant acceleration force, with given velocity components over time. The y-acceleration decreases from 2 m/s to -13 m/s over 3 seconds, while the x-acceleration increases from 2 m/s to 11 m/s in the same timeframe. The relevant equations include F = ma and acceleration = velocity/time. The user struggles to understand the problem and seeks clarification on the graphical representation. Ultimately, the problem was resolved with the assistance of a teacher.
rainingurl
Messages
5
Reaction score
0

Homework Statement


A constant acceleration forces "Force(a)" pushes a 2.kg FedEX package across a frictionless floor on which an xy coordinate system has been drawn. the figure below gives the packag's x and y velocity components versus time. What are the (a) magnitude and (b) the direction of the "Force(a)" The Y acceleration graphs shows that the Vy(m/s) from 2 to -13 it takes over 3 seconds. the X acceleration graphs shows that the Vx(m/s) from 2 to11 it takes over 3 seconds

Homework Equations


Acceleration = Velocity/time
F = mg
F= ma

The Attempt at a Solution


the following information are given; mass=2.kg, Y-acceleration = 5m/s^2, and X acceleration = 3m/s^2. If I could find the F in y direction, then i might able to find the F in x-direction. Basically, i am clueless.
 
Physics news on Phys.org
I can't understand the question. Can you show the graphic or explain what it shows more clearly?
 
Thanks a lot for trying to solve that problem. the problem is solved by the help of my teacher. I appreciate your help.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Back
Top