Questions and Answers
The first law of Newton states that an object will remain at rest or in uniform motion until an external or unbalanced ______ acts on the object.
FORCE
When an object is in ______, it means it is moving at a constant velocity.
UNIFORM MOTION
According to the first law, the more ______ an object has, the more force it takes to move it.
MASS
Newton's first law of motion is also known as the law of ______.
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The second law is known as the law of ______.
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The second law of acceleration states that acceleration is ______ proportional to the mass of an object.
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According to the second law, if the force is constant and the mass is doubled, then the acceleration is ______.
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The third law of Newton states that for every force of action, there is a force ______ in ______ but opposite in direction.
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The first law of Newton states that an object will remain at rest or in uniform motion until an external or unbalanced ______ acts on the object.
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When an object is in ______ it means it is moving at a constant velocity.
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According to the first law, the more ______ an object has, the more force it takes to move it.
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Newton's first law of motion is also known as the law of ______.
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The second law is known as the law of ______.
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The second law of acceleration states that acceleration is ______ proportional to the mass of an object.
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According to the second law, if the force is constant and the mass is doubled, then the acceleration is ______.
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The third law of Newton states that for every force of action, there is a force ______ in ______ but opposite in direction.
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The first law of Newton states that an object will remain at rest or in uniform motion until an external or unbalanced ______ acts on the object.
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When an object is in ______ it means it is moving at a constant velocity.
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According to the first law, the more ______ an object has, the more force it takes to move it.
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Newton's first law of motion is also known as the law of ______.
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The second law is known as the law of ______.
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The second law of acceleration states that acceleration is ______ proportional to the mass of an object.
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According to the second law, if the force is constant and the mass is doubled, then the acceleration is ______.
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The third law of Newton states that for every force of action, there is a force ______ in ______ but opposite in direction.
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The size of the action and reaction is the same but the reaction force always goes to the ______ direction of the action force.
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The third law is also known as the law of ______.
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What law of motion is exemplified when a wagon left on a level sidewalk remains motionless?
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What law of motion applies when an adult throws a ball faster than a little kid?
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What law of motion is exemplified by a rocket in space moving at a constant speed?
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What law of motion applies when a ball rolls up a hill and eventually rolls back down?
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What law of motion is demonstrated when a sailboat moves faster when the wind blows harder?
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Study Notes
Newton's Laws of Motion
- First Law of Motion: An object remains at rest or in uniform motion unless acted upon by an unbalanced FORCE. This principle emphasizes the concept of INERTIA.
- Uniform Motion: Describes an object moving at a constant velocity, maintaining both speed and direction.
- Mass and Force: Greater MASS of an object requires more force to initiate its motion, affirming the relationship between mass and the force needed for acceleration.
- Second Law of Motion: Known as the law of ACCELERATION, it states acceleration is INVERSELY proportional to the mass of an object when a constant force is applied.
- Acceleration with Mass Change: If the force remains constant and mass is doubled, the resulting acceleration is HALVED.
- Third Law of Motion: For every action, there is an equal and opposite reaction, meaning forces are EQUAL in MAGNITUDE but opposite in direction.
- Action and Reaction: The reaction force opposes the action force and is always equal in size, demonstrating that every force results in a counteracting force.
- Law of Interaction: Refers to the third law, emphasizing the interplay of forces acting on different bodies.
Everyday Situations Illustrating Laws of Motion
- Situation 1: An adult can throw a ball faster than a child due to the ability to exert more force, demonstrating the Second Law of Motion.
- Situation 2: A rocket in space maintains its speed in the absence of external forces, illustrating the First Law of Motion.
- Situation 3: A ball rolling up a hill slows down and rolls back due to gravitational and frictional forces, exemplifying the First Law of Motion.
- Situation 4: A sailboat speeds up as wind increases, which represents the Second Law of Motion, as additional force results in greater acceleration.
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Description
This quiz focuses on Newton's three laws of motion, tailored for Grade 8 students. Complete the sentences by filling in the missing words related to each law. Enhance your understanding of how force and motion interact.
