LESSON 1

38問 • 1年前

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A body at rest will remain at rest. A body in motion will remain in motion unless it is acted upon by an external force.

FIRST LAW

The force acting on an object is equal to the mass of the object is times its acceleration. F= ma or F= mass × acceleration

SECOND LAW

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

THIRD LAW

amount of matter in an object. regardless of where the object is. ( doesn't change) We use the triple-beam balance to measure this

Mass

- MEASURE of GRAVITATIONAL FORCE ATTRACTION of an object (g) - it depends on WHERE the object is (our weight on Earth DIFFERS from your weight on the Moon.) measured using a spring scale

Weight

push or pull occurs between two objects

FORCE

forces require physical contact between two objects

CONTACT FORCES

- typical type of push or pull - pushing a door open, pulling a rope

Applied Force

- rub against each other

Friction

- type of FRICTIONAL force - acts upon objects as they travel through the AIR

Air Resistance

- SUPPORT EXERTED upon an object that is in CONTACT with

Normal force

forces that act on an object WITHOUT the need for PHYSICAL CONTACT

NON-CONTACT FORCES

non-contact force can either attract or repel magnetic objects

Magnetic

- FORCES OF ATTRACTION between any two objects in the UNIVERSE. - The mass of objects and their distance determine the strength of their ___________. - can PULL PLANETS TOGETHER in the solar system and can also MAKE OBJECTS STAY on the surface of the Earth.

Gravitational Force

- affect the FORCE of GRAVITY. - The greater the mass and the closer the object, the stronger the gravitational pull.

MASS AND DISTANCE

- the non-contact force of electrical forces

Electrical force

- a flow of electric charges - can create a force between charged objects

Electricity

- DONE only when the OBJECT which FORCE IS APPLIED moves through CERTAIN DISTANCE.

WORK

is defined as the rate of doing work.

POWER

WORK perform in (unit)

Joules

If an object is at rest and is an a state of equilibrium, then we would say that the object is at static equilibrium. Static means stationary or at rest.

Static Equilibrium

In physics, it is the rotational equivalent of linear momentum.

Angular Momentum

is a DESCRIPTION of MOTION.

Kinematics

It describes the RELATIONSHIP among ROTATIONAL ANGLE, ANGULAR VELOCITY, angular ACCELERATION, and TIME.

Kinematics of Rotational Motion

is best known as NEWTON'S LAW of universal GRAVITATIONAL due to the UNIVERSALITY OF GRAVITY.

Newton's law of gravitation

He discovered that gravity is universal as all objects attract each other with a force of gravitational attraction

Newton

is the attractive pull between two objects that have mass.

Gravity

is the MEASURE of how much the material or MATTER IS IN AN OBJECT

Mass

is a MEASURE of GRAVITATIONAL FORCE EXERTED on an object due to gravity

Weight

is the ACCELERATION GAINED by an object DUE TO GRAVITATIONAL FORCE.

Acceleration due to gravity

is the ENERGY STORED in an object due to its position above EARTH'S SURFACE.

Gravitational Potential Energy

SYMBOL (angular momentum of the object)

Angular velocity

Moment of Inertia

Kinetic Energy unit

Joules

F is the applied force in __________.

Newtons (N)

WEIGHT UNIT

NEWTON

FORCE UNIT

Newton

QUIZ NO. 1

GLAIZA · 20問 · 2年前

QUIZ NO. 1