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Direction of Acceleration

  • Thread starter Nanoath
  • Start date
8
0
Three forces acting on an object are given by vectors F1=(-2i + 2j)N, F2 = (5i - 3j)N, and F3 = (-45i)N. The object experiences an acceleration of magnitude 3.75m/s^2.

What is the direction of acceleration?

So far i've got the resultant vector, but i'm not sure what to do with the vector.
 

Redbelly98

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Welcome to Physics Forums, Nanoath!

What equation or equations are you familiar with, that have to do with forces and acceleration?
 
8
0
I'm familiar with kinematic equations and newtons laws.


So far i've gotten the resultant vector and used tan^-1(1/42) to find an angle of 1.364, i just need to know if i'm on the right track.
 

Redbelly98

Staff Emeritus
Science Advisor
Homework Helper
12,038
128
Yes, you're on the right track. A couple of comments:

1. The direction of the force, 1.364 degrees, is measured relative to what (i.e., counterclockwise from +x axis, or something else?)

2. One of Newtons laws will give you the acceleration direction, given the force direction.
 

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