Mechanics

Cards (52)

  • 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=g =9.8Nkg1 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)