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Two forces act on a particle with mass that is initially at rest. What are the components of the particle's velocity at t = 10 s? And more?
Sorry, but there is a lot more to this problem. It's supposed to be a mix of laws in motion and review but I'm confused about which equations to use for it.
It is problem #15 in the picture. I drew the picture and calculated the magnitudes of the forces acting on the particle but I'm lost after that.
1 Answer
- Randy PLv 77 years agoFavorite Answer
The total force is F1 + F2 = (-6 -3)i + (-4 + 7)j = -9i + 3j.
The acceleration is therefore F/m = (-9i + 3j)/2.0 kg = -4.5i + 1.5j m/s^2
Solve the accelerated motion problem separately in each dimension.
x = (1/2)ax * t^2 where ax = -4.5 m/s^2
y = (1/2)ay * t^2 where ay = +1.5 m/s^2
Similarly velocity vx = ax * t, vy = ay * t.