force and motion

• what is the speed equation

  speed = distance / time
• what does each letter mean in SUVAT

  S- distance (m)

  U- initial velocity (m/s)

  V- finial velocity (m/s)

  A-acceleration (m/s)

  T- time (s)
• what is the difference between displacement and distance

  displacement includes a direction
• what are some examples of contact forces

  air resistance

  friction

  thrust

  tension
• what are some examples of non contact forces

  magnetism

  gravity

  electrostatic
• what does scalar mean

  size
• what does vector mean

  size and direction
• what is a resultant force

  the force acting on an object
• what is a balanced force

  when two forces are the same, the object doesn’t move or stays the same speed
• what is an unbalanced force

  the forces are not equal, the object will move
• what is the force equation

  force= mass x acceleration
• what is the weight equation

  weight = mass x gravitational field strength
• what is the thinking distance equation

  thinking distance = initial velocity x reaction time