science

• Speed


  measures how fast is something
• Formula of Speed


  Distance over time (d/t)
• Time


  Distance over speed (d/t)
• Velocity


  the speed and direction of a moving object
• Formula of velocity


  Displacement over time (d/t)
• Acceleration


  Rate of change in velocity
• Formula of acceleration


  velocity over elapsed time (△v/t)
• Displacement


  the change in position of an object
• formula of displacement


  distance times time (d=v●t)
• Scalar


  has magnitude only
• Vector


  has both magnitude and direction
• Scalar


  Speed

  mass

  volume

  time

  temperature
• Vector


  Friction

  Velocity

  Weight
• Example of projectile motion


  a trajectory of a cannonball shot from a cannon
• Remember

  Any object thrown under the sole influence of gravity is called projectile
• Elastic


  where kinetic and momentum are conserved
• Inelastic


  object stick together
• Momentum


  requires resisting force to stop
• formula of momentum


  p=mv kg●m/s
• formula of mass


  m=p/v kg
• formula of velocity


  v=p/m m/s