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Questions and Answers
According to Newton's first law of motion, what happens to a body when no force is acting on it?
According to Newton's first law of motion, what happens to a body when no force is acting on it?
- It moves in a circular path
- It accelerates in the direction of the net force
- It remains at rest or in constant motion in a straight line (correct)
- It changes its mass
What does the net force on a body equal to, according to Newton's second law of motion?
What does the net force on a body equal to, according to Newton's second law of motion?
- The body's momentum divided by its mass
- The body's mass divided by its acceleration
- The body's acceleration multiplied by its mass (correct)
- The body's velocity multiplied by its mass
In Newton's third law of motion, if two bodies exert forces on each other, what can be said about these forces?
In Newton's third law of motion, if two bodies exert forces on each other, what can be said about these forces?
- They have the same magnitude and same direction
- They have the same magnitude but opposite directions (correct)
- They have different magnitudes and opposite directions
- They have different magnitudes and same direction
When were the three laws of motion first stated by Isaac Newton?
When were the three laws of motion first stated by Isaac Newton?
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What is necessary when objects move at very high speeds, are very massive, or are very small, according to the text?
What is necessary when objects move at very high speeds, are very massive, or are very small, according to the text?
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