Questions and Answers
The phrase 'to every action there is an equal and opposite reaction' is ____.
Newton's third law of motion
The largest velocity reached by a falling object is it's ____.
terminal velocity
An object at rest on the surface of the earth is experiencing zero ____.
net force
The force exerted by air on a moving object is called ____.
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A net force acting on an object causes the object to accelerate in the direction of the force; this is ____.
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_____ is the force that every object in the universe exerts on every other object.
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An object's ______ is the measure of the force of gravity on that object.
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The amount of gravitational force between two objects depends on their masses and the ______ between them.
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Weight is measured in units called ______, while mass is measured in units called grams and kilograms.
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Two surfaces that are not moving past each other have ______.
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_______ cause a box you are pushing across the floor to stop when you stop pushing.
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Forces that result in a net force of zero are called ____.
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Any push or pull that can change an object's motion depends on their ____.
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The amount of gravitational force between two objects depends on their _____.
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Weight is measured in units called _____?
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Mass is measured in units called ____?
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An object at rest will remain at rest unless acted upon by ________ force.
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The tendency of an object to resist any change in its motion is called ____.
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Net force on an object which causes the object to accelerate in the direction of the net force; F= mass x ______.
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An object that is shot or thrown follows a _______ path because of the force of gravity pulling it.
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To every action force there is an equal and _____ reaction force.
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The backward 'kick' of a rifle that is fired is an example of a(n) ______ force.
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The formula for force equation is ____.
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The formula for acceleration is ____.
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The formula for mass is ____.
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Study Notes
Newton's Laws of Motion
- Newton's third law: "For every action, there is an equal and opposite reaction." This highlights the interaction of forces.
- Newton's second law: The relationship between net force, mass, and acceleration is defined by the equation F = m × a.
- An object at rest will not change its state unless acted upon by an unbalanced force, demonstrating the concept of inertia.
Key Concepts of Force
- Net force: The overall force acting on an object; if zero, the object remains at rest.
- Force: Any push or pull that can alter the motion of an object, dependent on mass and acceleration.
- Balanced forces: Forces that result in a net force of zero, keeping an object either at rest or moving at a constant velocity.
- Unbalanced forces: Cause an object to change its state of motion.
Types of Friction
- Static friction: The force resisting the initiation of motion between two surfaces at rest.
- Sliding friction: Occurs when two surfaces slide against each other; causes moving objects to slow down.
Gravitational Concepts
- Gravity: The universal force that attracts objects toward each other, directly proportional to their masses and inversely proportional to the square of the distance between them.
- Weight: The force of gravity on an object, measured in newtons, varies with gravitational strength.
- Grams and kilograms are units of mass; newtons measure weight.
Motion and Acceleration
- Terminal velocity: The maximum velocity a falling object can reach, where forces of gravity and air resistance balance.
- Acceleration: Describes how velocity changes over time; influenced by net force acting on an object.
Air Resistance and Motion
- Air resistance: The force exerted by air against a moving object, which increases with velocity.
Gravity and Distance
- The gravitational force between two objects depends on their masses and the distance separating them; closer objects exert a stronger gravitational pull.
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Description
Test your understanding of Newton's Laws of Motion and the key concepts of force and friction. This quiz covers essential principles such as inertia, net force, balanced and unbalanced forces, as well as different types of friction. Perfect for students studying physics!
