Questions and Answers
Newton's first law of motion is also known as the law of ______.
Inertia
What is Newton's first law of motion?
An object that is not moving, or is at rest, remains so unless an outside or unbalanced force acts on it.
What is inertia?
The tendency of an object to resist a change in its motion.
What property of an object determines how much inertia it has?
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Which of the following has more inertia?
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If the same force is applied to an object with a large mass, it will have a _____ acceleration.
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If the same force is applied to an object with a small mass, it will have a _____ acceleration.
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What do the variables mean?
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What unit of measurement must be used with each variable?
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What does F=ma mean?
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What is Newton's second law of motion?
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The greater the force that is applied, the ______ the acceleration.
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The lesser the force that is applied, the _____ the acceleration.
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Study Notes
Newton's First Law of Motion
- Also known as the Law of Inertia.
- States that an object at rest remains at rest, and an object in motion remains in motion at a constant speed and in a straight line unless acted upon by an unbalanced external force.
- Inertia is the tendency of an object to resist changes in its motion.
- The mass of an object determines its inertia; greater mass means greater inertia.
Inertia Comparison
- A bowling ball has more inertia than a tennis ball due to its greater mass.
- A hammer has more inertia than a feather, again due to its larger mass.
Acceleration and Mass Relationship
- When the same force is applied to an object with a large mass, it experiences less acceleration.
- Conversely, if the same force is applied to an object with a small mass, it experiences greater acceleration.
Variables in Newton's Laws
- F represents force, M represents mass, and A represents acceleration.
- Units of measurement:
- Force (F): kg-m/sec²
- Mass (M): kg
- Acceleration (A): m/sec²
Newton's Second Law of Motion
- Newton's second law states that when an external force is applied to a mass, it causes that mass to accelerate in the direction of the force.
- A greater applied force results in greater acceleration.
- A lesser applied force results in less acceleration.
Fundamental Equation
- The equation F = ma encapsulates the relationship between force, mass, and acceleration; force equals mass times acceleration.
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Description
Test your understanding of Newton's First Law of Motion, also known as the Law of Inertia. This quiz covers key concepts including inertia, the relationship between mass and acceleration, and examples to illustrate these principles. Perfect for reinforcing your knowledge in physics.
