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A particle of m=5kg is momentarily at re...

A particle of `m=5kg` is momentarily at rest at `x= at `t=. It is acted upon by two forces `vec(F)_(1)` and `vec(F)_(2)`. `Vec(F)_(1)=70hat(j)` N. The direction and manitude of `vec(F)_(2)` are unknown. The particle experiences a constant acceleration, `vec(a)`,in the direction as shown in (figure) Neglect gravity.


a.Find the missing force `vec(F)_(2)`.
b. What is the velocity vector of the particle at `t=10 s`?
c. What third force, `vec(F)_(3)` is required to make the acceleration of the particle zero? Either give magnitude and direction of `vec(F)_(3)` or its components.

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