Collisions
Type of collision that occurs when two objects bounce off each other
Elastic Collision
An object that is not moving has a momentum of ____
zero
the average kinetic energy of particles, measured in Celsius, Fahrenheit,or Kelvin
Temperature
Direction of Heat Transer
Hot to cold
If A=B and B=C then A=C
Zeroth Law of Thermodynamics
Type of Collision that occurs when objects stick together
Inelastic Collision
Mass x velocity is
momentum
A measure of how hot or cold something is
temperature
transfer of heat energy by direct contact, usually occurs in solids
conduction
As the temperature of an object approaches absolute zero (0 Kelvin), its entropy and kinetic energy approach zero.
3rd Law of Thermodynamics
A 6 kg fish swimming at -1 m/sec swallows a 2 kg fish that is swimming towards it at +2 m/sec. Find the velocity of the fish immediately after “lunch”.
m1v1,i + m2v2, i = (m1+m2) vf
-1/4 m/s
Force acting over a period of time is called
Impulse
form of energy that can be transferred from one object to another
heat
electromagnetic waves travel through empty space
radiation
Entropy or disorder increases
2nd Law of Thermodynamics
In this type of collision(s), momentum is conserved
Elastic and Inelastic Collisions
A 5 kg bowling ball is given a momentum of 15 kg*m/s. What is its velocity?
p=m x v
3 m/s
3 types of heat transfer
conduction, convection, and radiation
hot air rises, cold air falls, occurs in liquids and gases
convection
study of the movement of heat energy
thermodynamics
In this type of collision, kinetic energy is conserved
Inelastic collision
State the Law of Conservation of Momentum
the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Difference between a conductor and insulator
Conductor - transfers heat energy quickly
insulator- transfers heat energy slowly
heat transfer stops when this is reached
thermal equilibrium
Law of Conservation of Energy
1st Law of Thermodynamics