Object A is acted on by only object B. The mass of object A is 20.0 kg and its acceleration is 4.00 m/s2 west. Object B is acted on by two forces, the force of object A on object B and another unknown force. If mass of object B is 40.0 kg and the acceleration of object B is 3.00 m/s2 west, what is the unknown force?
A) 40 N west
B) 120 N west
C) 80 N east
D) 200 N west
E) 80 N west
Correct Answer:
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Q62: FIGURE 4-8 Q63: A 2.00-kg object moves with constant velocity Q64: Three boxes rest side-by-side on a smooth, Q65: Two objects push on each other. The Q66: Starting from rest, a 4.0-kg body reaches
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