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21 Cards in this Set

  • Front
  • Back

Newtons first law

An object will remain at rest unless acted on by a net force

Newtons second law

The rate of change of momentum on a object is directly proportional to the net force applied to it

F=ma (when m is constant)

Newtons third law

When a body A exerts a force on body B, body B exerts a force that is equal and opposite

Law of inertia

Amount of resistance to change velocity


Mass x velocity


The force that will accelerate a mass of 1kg by 1ms^-2

Impulse (p)

Change in momentum

Area under force time graph=impulse

Principle of conservation of momentum

In any direction, in the absence of external forces the total momentum of a system remains constant

Perfectly elastic collision

No momentum or energy is lost

Inelastic collision

Momentum is conserved but energy isn't


Number of oscillations/cycles per unit time

Angular frequency

2pi x frequency

Specific latent heat of fusion

The quantity of energy per unit mass required to change from a solid to a liquid at constant temp.

Specific latent heat of vaporization

The quantity of energy required to change from liquid to a gas at constant temp.

Kinetic theory assumptions

Large n. Molecules moving randomly

Collisions are elastic

Negligible grav. Forces

No intermoleculer force

Travel in straight lines

Internal energy

The sum of random distributions of kinetic and potential energies of all molecules in the body

Ideal gas

All internal energy is random kinetic energy

0th law of thermodynamics

If A and B are in thermal equilibrium with C then A is in thermal equilibrium with A

Specific heat capacity

The amount of thermal energy required to raise the temperature of a unit mass by a unit temp

Boyles law

The volume of a fixed mass of gas is inversely proportional to the pressure if temperature is constant

Newtons law of gravitation

Force is proportional to product of masses and inversely proportional to square of seperation