B. It would have a net force of 200N to the left. Meaning the the forces are unbalanced and the net force would cause it to accelerate (speed up) in the direction of the net force.
Explanation:
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Answer:
protons=electrons=9(atomic number)
Neutrons=19-9=10(math number-atomic number)
I’m pretty sure it’s D because energy measures the kinetic, thermal, electrical, chemical, nuclear and other forms.