Newtonian Physics Flashcards

Flashcards on Newtonian Physics, covering Newton's Laws of Motion, forces, gravity, mass, and weight.

Inertia

The tendency of an object to resist a change in its motion.

Newton's First Law

An object at rest will remain at rest, and an object in motion will continue to travel in a straight line at the same speed unless acted upon by an unbalanced force.

Motion of unrestrained passengers during collisions

Passengers who are not wearing seatbelts will continue moving forwards if a vehicle comes to a sudden stop.

Whiplash

Injury that occurs when a stationary vehicle is hit from behind and a passenger's head remains at rest while their body is pushed forwards

Force

A push, pull, or twist that can change the velocity of an object.

Units of Force

Measured in Newtons (N); amount of force needed to accelerate an object of mass 1 kg by 1 m/s/s.

Gravity

The force of attraction between any two objects that have mass.

Mass

A measure of the amount of matter inside an object, measured in kilograms (kg).

Acceleration Due to Gravity

All objects on Earth accelerate towards the ground at 9.8 m/s/s.

Weight

The force on an object due to gravity, measured in Newtons (N). Fg = mg

Net Force

The unbalanced force acting on an object.

Newton's Second Law

The acceleration of an object depends on the net force applied to it and the object's mass. F = ma

Newton's Third Law

For every action force, there is an equal and opposite reaction force.

Action-reaction force pairs

If object A applies a force on object B, object B will apply an equal and opposite force back on object A.

Normal reaction force

The force that a surface applies to an object in reaction to the weight force of which pushes the object into the surface

Inertia

The tendency of an object to resist a change in its motion.

Newton's First Law

An object at rest will remain at rest, and an object in motion will continue to travel in a straight line at the same speed unless acted upon by an unbalanced force.

Motion of unrestrained passengers during collisions

Passengers who are not wearing seatbelts will continue moving forwards if a vehicle comes to a sudden stop.

Whiplash

Injury that occurs when a stationary vehicle is hit from behind and a passenger's head remains at rest while their body is pushed forwards

Force

A push, pull, or twist that can change the velocity of an object.

Units of Force

Measured in Newtons (N); amount of force needed to accelerate an object of mass 1 kg by 1 m/s/s.

Gravity

The force of attraction between any two objects that have mass.

Mass

A measure of the amount of matter inside an object, measured in kilograms (kg).

Acceleration Due to Gravity

All objects on Earth accelerate towards the ground at 9.8 m/s/s.

Weight

The force on an object due to gravity, measured in Newtons (N). F_g = mg

Net Force

The unbalanced force acting on an object.

Newton's Second Law

The acceleration of an object depends on the net force applied to it and the object's mass. F = ma

Newton's Third Law

For every action force, there is an equal and opposite reaction force.

Action-reaction force pairs

If object A applies a force on object B, object B will apply an equal and opposite force back on object A.

Normal reaction force

The force that a surface applies to an object in reaction to the weight force of which pushes the object into the surface

Calculating Force

Formula: F = ma. Example: A 5kg bowling ball accelerates at 2 m/s². What is the force? F = 5 \times 2 = 10N

Example of Newton's Third Law

If you push against a wall, the wall pushes back against you with equal force.