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Questions and Answers
Match the type of friction with its description:
Match the type of friction with its description:
Static Friction = Prevents objects from initially sliding past each other. Sliding Friction = Opposes the motion of objects already sliding past each other. Fluid Friction = Friction between a surface and a fluid (liquid or gas). Rolling Friction = Resists the motion of a rolling object on a surface.
Match the force with its correct description:
Match the force with its correct description:
Gravity = Attractive force between objects with mass. Electric Force = Force between charged objects. Magnetic Force = Force due to moving electric charges Applied Force = A force that is applied to an object by another object.
Match the concept with its correct definition related to gravitational forces:
Match the concept with its correct definition related to gravitational forces:
Mass = The amount of matter in an object. Weight = The gravitational force exerted on an object. Gravitational Field = The region around a mass where another mass experiences a force. Inertia = The tendency of an object to resist changes in its state of motion.
Match the factor that affects gravitational force with its effect:
Match the factor that affects gravitational force with its effect:
Match the subatomic particle with their corresponding charge:
Match the subatomic particle with their corresponding charge:
Match the property with its description associated with forces:
Match the property with its description associated with forces:
Match the scenario with the type of force that is primarily involved:
Match the scenario with the type of force that is primarily involved:
Match the situation to the type of friction it demonstrates most clearly:
Match the situation to the type of friction it demonstrates most clearly:
Flashcards
Force
Force
A push or pull on an object, measured in newtons (N).
Contact Force
Contact Force
A force that requires direct contact between objects.
Non-Contact Force
Non-Contact Force
A force that acts between objects without direct contact.
Friction
Friction
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Static Friction
Static Friction
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Sliding Friction
Sliding Friction
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Fluid Friction
Fluid Friction
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Gravity
Gravity
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Study Notes
- Forces cause changes in an object's motion.
Types of forces
- Force is a push or pull on an object measured in newtons (N).
- Contact force involves a push or pull on one object by another that is touching, such as pushing a container, pressing computer keys, or friction.
- Non-contact force involves a push or pull on one object by another without touching, examples are gravity, magnetic, and electrical forces.
Friction
- Friction is a force that resists the motion of two touching objects
- Static friction prevents objects from sliding past each other
- Sliding friction opposes the motion of objects sliding past each other
- Fluid friction is friction between a surface and a fluid, like water or air (air resistance).
Static vs. Sliding Friction
- Static friction example: an applied force of 100N with a static friction of -100N will result in a Net Force of zero
- Sliding friction example: an applied force of 200N with a sliding friction of -70N will result in a Net Force of 130N
Gravity
- Gravity is an attractive force between all objects with mass.
- Mass is the amount of matter in an object.
- Greater mass means stronger gravitational pull.
- Greater distance results in less gravitational pull.
Weight
- Weight refers to the amount of gravitational force exerted on an object, measured in newtons (N).
- For an astronaut with a weight of 539N and a mass of 55kg on Earth, their weight would change on the moon not mass.
Electrical force
- Static charge: an unbound positive or negative charge on an object.
- Opposite charges attract each other
- The same charges repel each other.
- Amount of charge: more charge results in greater electrical force (attraction or repulsion).
- Distance: more distance results in less electrical charge.
Magnetic Force
- Magnet: an object that attracts metal iron.
- Magnetic Pole: the location on a magnet where the force it applies is strongest.
- Opposite poles (charges) attract each other.
- The same poles (charges) repel each other.
- The size of the magnet and distance both affect magnetic strength, the further away the weaker the force.
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Description
Explore forces, pushes, pulls, contact, and non-contact forces. Learn about friction, including static, sliding, and fluid friction, and their effects on motion. Understand the difference between static and sliding friction.
