Phisical Science unit 2: Energy and Waves

Energy

the ability to do work and change matter

Joule

the SI unit for work and energy

1 J= 1 N(m)

the formula for joule

Kinetic Energy

energy in motion

Potential Energy

energy associated with the position of an object and the forces acting upon it

Mechanical energy

energy from motion or force that affect the whole object

law of conservation of energy

natural causes cannot creat or destroy energy

Mass-energy equivalence

mass and energy can be considered two different ways of measuring the same phisical property

law of conservation of mass and energy

the law that states that the total mass and energy is constant

Whole-body Kinetic energy

the simplest form of energy

translation motion

the simplest form of motion; an object moving in space, changing in position

circular motion

motion in a circle centered on a point outside the object

translational kinetic motion

the whole-body kinetic energy caused by translation motion

speed

the distance traveled in a certain amount of time

v=d/t

the formula for speed

E sudk = ½ mv squared

the formula for kinetic energy

rational motion

spins or rotates on an internal axis

rotational kinetic energy

kinetic energy caused by rotational motion

kinetic theory of matter

the individual molecuels of a substance are in constant motion

thermal energy

the energy that the object possess due to the random motion of it’s molecules

wave energy

energy caused by a disturbance moving through a substance