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If the sum of all the forces acting on a moving object is zero, the object will:

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Correct Answer: D. continue moving with constant velocity.
For something to change direction or accelerate there must be a net force acting on it (Newton’s 2nd Law).
Also, Newton’s 1st Law states that an object in motion will stay in motion at constant velocity (a form of inertia) unless acted upon by a net (an unbalanced) force.
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