forces

• force


  the rate of change of momentum with respect to time
• F=?


  $F=$$P/t$
• how to calculate force

  force = momentum / time
• p=? 


  p=mv
• how to calculate momentum

  momentum= mass * velocity
• force is a vector quantity and its SI unit is the newton, N
• weight 


  is pull of gravity acting on an object and equal to the product of mass and accaleration due to gravity
• momentum in...


  Newton seconds, Ns
• W= ?


  W= mg
• weight= mass * gravity
• gravity in ....


  m/s square
• frictional force 


  frictional force is a force which exicts between 2 surfaces. and always opposes motion
• Ff?


  frictional force
• Fr ?


  Force resultant = mass * acceleration
• Tension 


  Tension is a force which exists in a rope string spring that is stretched
• Momentum 


  Is defined as the product of mass and velocity of a body
• P


  Momentum= mass *velocity
• P


  Pressure = force / area
• Pressure is in pascal, Pa
• Area is measured in square meters when calculating pressure
• Fluid pressure 


  Exert pressure in all directions
• Calculate pressure in fluids

  P = pgh
• p.


  Fluid density
• g


  Acceleration due to gravity
• h


  Height of the fluid column above the point of measurement
• Atmospheric pressure 


  The pressure exerted by the weight of the atmosphere
• Atmospheric pressure at sea level is approximately 101,325 Pa
• Tool used to measure atmospheric pressure 


  Barometer
• Pressure increases with the increase in force applied or a decrease in the area over which the force is distributed
• Pressure in fluids acts in all direction and increase with depth
• Atmospheric pressure decrease with altitude
• Moment = force * distance
• Distance is the perpendicular distance from the pivot to the line of action of the force
• Unit of momentum 


  Kg m / s
• Velocity formula 


  Velocity= momentum/ mass