physical laws, work, power, momentum and energy 1

matter

anything that has mass, inertia, and occupied space

Law of Conservation of Matter

'Matter cannot be created nor destroyed.'

States of Matter

Solids, Liquids, and Gases.

Mass

Amount or quantity of matter in an object

Law of Conservation of Mass

'Mass (like matter) cannot be created nor destroyed.'

Weight

Mass of an object in a gravitational field

Work

Force acting upon an object to cause a displacement

Power (P)

Rate at which work is done

Momentum

Mass in Motion

Momentum formula

Momentum = Mass x Velocity

Energy

The ability or capacity to do work.

Law of Conservation of Energy

Energy may neither be created nor destroyed

Mechanical Energy (M.E.)

Ability to do work

what are the two forms of mechanical energy?

kinetic and potential energy

Kinetic Energy

energy of motion or released energy

Potential Energy

stored energy of position

Thermal Energy

Result of the motion of atoms and molecules.

Electrical Energy

The movement of electrons (electricity)

Nuclear Energy

Energy contained in the nucleus of an atom

Electromagnetic Energy (Radiation)

Radiant energy resulting from electric and magnetic fields /forces in space

does a radiation ionizes

no

some examples of electromagnetic energy include

cameras, x-rays, UV, visible light, infrared, microwaves, and radio waves

newtons first law

An object will remain at rest or in motion unless acted upon by an external and unbalanced

force

newton’s second law

Acceleration is produced when a force acts on a mass

what is the formula for force?

Force= mass X acceleration

Increased force means

increase acceleration

decrease force means

lower acceleration

newton’s third law

For every action there is an equal and opposite re-action