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Assessment
What is the first law of motion formulated by Newton?
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
For every action, there is an equal and opposite reaction.
The path of a falling object is always a straight line.
According to Newton's second law of motion, what happens to an object's acceleration if the net force acting on it is doubled?
The acceleration remains the same.
The acceleration is halved.
The acceleration is doubled.
The acceleration is quadrupled.
What is the significance of Newton's third law of motion?
It explains how gravity acts on objects.
It states that for every action, there is an equal and opposite reaction.
It defines how momentum is conserved.
It illustrates how pressure affects fluids.
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