Force and Motion Flashcards

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Questions and Answers

What is gravity?

A push or pull of any kind

The invisible force of attraction between all masses in the universe (correct)

The measure of the speed and direction of an object

The energy of motion

What is a law in scientific terms?

A statement about how things work in nature that seems to be true

Who defined the laws of motion and gravity?

Isaac Newton

What are the laws of motion?

Three laws that describe how objects move in relation to forces acting on them Signup and view all the answers

What is an unbalanced force?

A force that causes an object to start moving, stop moving, or change direction Signup and view all the answers

What does the 1st law of motion state?

An object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force Signup and view all the answers

What causes friction?

The resistance caused when one object is moved in contact with another Signup and view all the answers

What does the 2nd law of motion imply?

An object with an unbalanced force acting on it will accelerate in the direction of that force (f=m*a) Signup and view all the answers

What is the 3rd law of motion?

For every action there is an equal and opposite reaction Signup and view all the answers

What is inertia?

The tendency of an object to maintain a state of rest unless acted upon by an external force Signup and view all the answers

What does mass measure?

The amount of matter in an object Signup and view all the answers

Define momentum.

The force with which something moves Signup and view all the answers

What are scales?

The ratio between the size of something and a representation of it Signup and view all the answers

What is weight?

A measure of the force of gravity on an object Signup and view all the answers

What is motion?

A change of position of an object Signup and view all the answers

What is velocity?

The measure of the speed and the direction of an object Signup and view all the answers

Define speed.

The measure of an object's distance during a unit of time Signup and view all the answers

What is force?

A push or pull of any kind Signup and view all the answers

What is acceleration?

Any change in the speed or direction of an object's motion Signup and view all the answers

Define thrust.

The force that moves an object forward Signup and view all the answers

What is drag?

The force that slows an object down Signup and view all the answers

What is lift?

An upward force on an object Signup and view all the answers

What is energy?

The ability to do work Signup and view all the answers

What is work?

The transfer of energy from one object to another Signup and view all the answers

Define potential energy.

Stored energy, energy ready to be released Signup and view all the answers

What is kinetic energy?

The energy of motion Signup and view all the answers

What is a balanced force?

Two or more forces that are equal and opposite of one another; do not cause change in motion Signup and view all the answers

What is a newton?

A unit of force Signup and view all the answers

What is air resistance?

Frictional force air exerts on a moving object; acts opposite in direction to the object's motion Signup and view all the answers

Study Notes

Fundamental Concepts of Force and Motion

Gravity: An invisible attractive force between all masses, causing objects to pull towards each other.
Law: A statement reflecting natural behaviors that consistently occur in nature, regarded as true.

Contributions of Sir Isaac Newton

Isaac Newton: Mathematician and physicist known for formulating the laws of motion and the law of gravity, explaining universal motion.
Laws of Motion: Three essential principles proposed by Newton that describe how forces influence the movement of objects.

Forces in Motion

Unbalanced Force: A force that causes an object to move, stop, or change its direction.
1st Law of Motion: Object at rest remains at rest, and an object in motion maintains its state unless influenced by an unbalanced force.

Types of Forces

Friction: Resistance encountered when one object moves in contact with another surface.
2nd Law of Motion: States that an unbalanced force will cause an object to accelerate, described with the formula ( f = m(a) ) (force equals mass times acceleration).
3rd Law of Motion: For every action force, there is an equal and opposite reaction force.

Properties of Motion

Inertia: The tendency of an object to remain in its current state of motion unless affected by an external force.
Mass: Measurement of the amount of matter in an object, crucial in determining weight and inertia.
Momentum: Represents how much force an object has while it is moving.

Measurement and Kinematics

Scales: Ratio comparing the size of an object to its representation or model.
Weight: The gravitational force exerted on an object, dependent on mass.
Motion: Defined as any change in an object's position over time.
Velocity: Combines speed with the direction of an object's movement.
Speed: The distance traveled by an object over a specific time period.

Dynamics of Forces

Force: Any push or pull that can cause an object to move or alter its motion.
Acceleration: Any change in the speed or direction of an object's movement.
Thrust: The force that propels an object forward.
Drag: A resistance force that works against an object in motion, slowing it down.
Lift: An upward force acting on an object, countering gravity.

Energy and Work

Energy: The capacity to perform work, existing in various forms including kinetic and potential energy.
Work: The process of transferring energy between objects.
Potential Energy: Stored energy, ready to be converted into kinetic energy.
Kinetic Energy: Energy that an object possesses due to its motion.

Equilibrium and Forces

Balanced Force: A situation where two or more forces are equal and opposite, resulting in no change in motion.
Newton: The standard unit of force in the International System of Units (SI).
Air Resistance: The opposing force exerted by air against a moving object, acting in the opposite direction to that object's motion.

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Description

Explore the fundamental concepts of force and motion through these informative flashcards. Each card provides key vocabulary and definitions, including the laws of motion and the work of Sir Isaac Newton. Perfect for students looking to enhance their understanding of physics.