Physics

• Acceleration


  The rate of change of velocity per unit time
• Uniform acceleration


  An object moves with uniform acceleration if its change in velocity is the same in equal time intervals
• a


  Acceleration in m/s²
• V


  Velocity in m/s
• Vu

  Initial velocity in m/s
• t


  Time in seconds
• F


  Force in Newtons (N)
• P


  Momentum in kg.m/s
• Force


  Change in momentum per unit time
• The SI unit for acceleration is m/s²
• Speed


  Change in distance per unit time
• Initial speed


  Speed at the beginning of a period of time
• Final speed


  Speed at the end of a period of time
• Distance


  Length of a path travelled by an object
• Time


  Duration of a period
• Uniform speed


  An object covers an equal distance in equal time intervals
• SI unit of speed

  m/s
• Another unit of speed

  km/h
• Velocity


  Change in displacement per unit time
• Displacement


  Change in position
• Uniform velocity


  An object has equal changes in displacement in equal time intervals
• Velocity is a vector quantity
• Momentum 


  Product of the mass and velocity of an object
• Area under a velocity-time graph

  Speed
• The area under a velocity-time graph gives the speed
• Difference between velocity and speed

  Velocity is the change in displacement while speed is the change in distance per unit time
• What physical quantity is given by the gradient of a distance time graph

  Velocity
• Momentum


  P
• P


  Mass * velocity
• Force 


  Ma
• F


  Mass*acceleration
• How many atoms are in something determine its Mass
• Your weight depends on gravity
• What is the unit of momentum

  Kg m/s
• Momentum is conserved when there's no external force acting on an object or system.
• shop aselatant stacks a shelf with 25 tins of beans each of mass 460g. Each kin has to be caised through a dietance of 18 m Calculate the gravitational potential energy gained by the tins of beans, given that the acceleration of free foll is