Mechanics

• Velocity equation 


  v = triangle d/ triangle t
• Acceleration equation 


  a = triangle v/ triangle t
• Force equation 


  Fnet = ma
• Pressure equation 


  P = F/A (Force divided by area)
• The gravitational potential energy equation 


  (Triangle) Ep = mg (triangle)h
• Kinetic energy equation

  Ek = 1/2 * m * v^2
• Power equation

  P = W/t ( W = the energy changed)
• A scaler quantity has only a value (magnitude) associated with it.
• A vector quantity has a value (magnitude) and direction associated to it.
• Acceleration due to the force of gravity: $g =$$9.8Nkg^-1$
• Speed is the time rate at which an object is moving along a path. It is a scaler quantity and speed is velocity without a direction.
• Velocity is the rate and direction of an object's movement. It is vector quantity and velocity is direction speed.
• Distance is the total length or ground covered by an object.
• Displacement is the change in the position of the object
• When interpreting graph use words and calculations
• The law of conservation states that energy cannot be created and destroyed it can only be transferred or transformed
• Law of acceleration: The second newton's law of motion is that the force applied on a n object is equal to the product of its mass and acceleration.
• Law of intertia: inertiaThe first law of motion is an object that cannot start, stop or change direction by itself.
• We need calculation evidence to prove that the object is stationary. a = 0 and (Triangle) v = 0
• There is always a connect between forces and motion and we have to explain this.
• Full explanation when explain the net force
• Stating equations in each explanation
• Pressure is a measure of force applied to a particular area.
• Pressure is increased by increasing the forec in the same area or reducing the area the force is applied to
• Pressure is proportional to force
• Pressure unit is pascal (N/m^2 or Nm^-2)
• Area unit is m^2
• The different position of the object will determine the pressure applied
• Gravitational potential energy is the potential energy an object has because of its height.
• The higher an object is lifted the greater the gravitational potential energy.
• E questions will always need to state the law of conservation
• An object has kinetic energy when it is moving
• More mass greater kinetic energy
• lower mass lower kinetic energy
• Friction is the opposing force to kinetic energy
• assuming no energy is lost, all energy will be transferred
• Work is the transformation/transferred of energy. Which is the change in energy gain/ or loss of energy.
• W = F * d ( Weight moved, distance moved)
• Easier = Force is smaller
• You are NOT doing any work if the object is NOT MOVING (need to generate displacement)