physics🧑‍🍳

• define distance

  how much ground has an object covered during its motion
• define displacement

  how far the object is from its starting point
• define instantenous speed

  how fast an object is moving at a certain time
• what is velocity

  a measure of the rate of change in position overtime
• what is speed

  a measure of the rate of which distance is covered overtime
• km/h -> m/s

  divide 3.6
• what is acceleration

  acceleration is the rate at which the velocity of an object changes
• what is velocity

  Velocity is the rate at which an object changes its position, including both the speed and direction of motion.
• an object has acceleration if

  it changes direction, it speeds up, it slows down
• accerleration is measured in

  m/s2
• if an object slows down it has

  negative acceleration
• if an object speeds up it has

  positive acceleration
• to calculate hour to minute you

  times 60
• to convert minute to hour you

  divide by 60
• what is a force

  a force is an influence that can change the motion of an object
• are forces vector or scalar

  vector
• unit of force

  newton (N)
• what is newtons 3rd law

  each action has an equal and opposite reaction
• what is newstons 1st law

  an object will remain at rest, or will not change its speed or direction, unless it is acted upon by an unbalanced outside force
• the greater the mass of an object


  the greater the inertia it has
• if a force is unbalanced

  the object is accelerating
• what is newtons second law

  the acceleration of an object is dependant of its mass and the net force acting on it