Motion, Forces & Energy Textbook Chapter 2 (Forces) Quiz

1. The friction produced by rolling objects (ex. wheels, balls) is called ________ friction.

The friction produced by rolling objects is called rolling friction. This type of friction occurs when an object rolls over a surface, such as a wheel or a ball. Rolling friction is generally less than sliding friction, which occurs when an object slides over a surface. Rolling friction is important in various everyday activities, such as driving a car or playing sports that involve rolling objects.

Explanation

The friction produced by rolling objects is called rolling friction. This type of friction occurs when an object rolls over a surface, such as a wheel or a ball. Rolling friction is generally less than sliding friction, which occurs when an object slides over a surface. Rolling friction is important in various everyday activities, such as driving a car or playing sports that involve rolling objects.

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2. A ________ is a push or a pull.

The correct answer for this question is "force". In physics, force is defined as a push or a pull that can cause an object to accelerate, decelerate, or change direction. It is a vector quantity, meaning it has both magnitude and direction. The variations in capitalization do not change the meaning of the word, as it still refers to the same concept.

Explanation

The correct answer for this question is "force". In physics, force is defined as a push or a pull that can cause an object to accelerate, decelerate, or change direction. It is a vector quantity, meaning it has both magnitude and direction. The variations in capitalization do not change the meaning of the word, as it still refers to the same concept.

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3. The force of attraction that exists between all objects in the universe is called falling friction also known as ________.

The force of attraction that exists between all objects in the universe is called gravity. It is a fundamental force that governs the motion of celestial bodies and is responsible for keeping planets in orbit around the sun and objects on Earth's surface. Gravity is not affected by the capitalization of letters, so it can be written as gravity, gRAVITY, gRaViTy, or GrAvItY.

Explanation

The force of attraction that exists between all objects in the universe is called gravity. It is a fundamental force that governs the motion of celestial bodies and is responsible for keeping planets in orbit around the sun and objects on Earth's surface. Gravity is not affected by the capitalization of letters, so it can be written as gravity, gRAVITY, gRaViTy, or GrAvItY.

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4. When solid objects slide over each other, that type of friction is called ________ friction.

When solid objects slide over each other, the type of friction that occurs is called sliding friction. This type of friction is caused by the resistance between the surfaces of the objects as they move against each other. It is characterized by a smooth and continuous motion between the objects.

Explanation

When solid objects slide over each other, the type of friction that occurs is called sliding friction. This type of friction is caused by the resistance between the surfaces of the objects as they move against each other. It is characterized by a smooth and continuous motion between the objects.

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5. Slippery substances such as oil, wax and grease are called ________.

Slippery substances such as oil, wax, and grease are called lubricants.

Explanation

Slippery substances such as oil, wax, and grease are called lubricants.

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6. ________ is a force that acts in a direction opposite of the motion.

Friction is a force that acts in a direction opposite to the motion. It occurs when two surfaces come into contact and resist each other's motion. Friction can be influenced by factors such as the roughness of the surfaces, the force pressing the surfaces together, and the type of materials involved. The amount of friction depends on these factors and can be increased or decreased by altering them.

Explanation

Friction is a force that acts in a direction opposite to the motion. It occurs when two surfaces come into contact and resist each other's motion. Friction can be influenced by factors such as the roughness of the surfaces, the force pressing the surfaces together, and the type of materials involved. The amount of friction depends on these factors and can be increased or decreased by altering them.

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7. The force exerted by a fluid (ex. air, water, oil) is called ________ friction.

The force exerted by a fluid is called fluid friction. In this context, fluid refers to any substance that can flow, such as air, water, or oil. The variations in capitalization (fluid, fLUID, FLUID, fLuId, FlUiD) do not affect the meaning of the term.

Explanation

The force exerted by a fluid is called fluid friction. In this context, fluid refers to any substance that can flow, such as air, water, or oil. The variations in capitalization (fluid, fLUID, FLUID, fLuId, FlUiD) do not affect the meaning of the term.

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8. Two forces which are both acting in opposite directions are called ________ forces.

The correct answer for this question is "balanced". The term "balanced" refers to two forces that are equal in magnitude and opposite in direction, resulting in a net force of zero. It is important to note that the capitalization of the word does not change its meaning in this context.

Explanation

The correct answer for this question is "balanced". The term "balanced" refers to two forces that are equal in magnitude and opposite in direction, resulting in a net force of zero. It is important to note that the capitalization of the word does not change its meaning in this context.

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9. A property of matter which resists any motion is called ________.

Inertia is a property of matter that resists any motion. It is the tendency of an object to resist changes in its velocity, whether that is starting, stopping, or changing direction. The correct answer is "Inertia" because it is spelled correctly and represents the property being described. The variations in capitalization do not affect the meaning of the word.

Explanation

Inertia is a property of matter that resists any motion. It is the tendency of an object to resist changes in its velocity, whether that is starting, stopping, or changing direction. The correct answer is "Inertia" because it is spelled correctly and represents the property being described. The variations in capitalization do not affect the meaning of the word.

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