PHYSICS FORCES

PHYSICS FORCES

Forces are pushes and pulls
1. they can change things shape
2. change movement speed
3. change the direction
unit for measuring is newtons (n)
types of forces
1. friction
  1. a force that is caused by rubbing two things together
    1. contact force
  2. slows things down
    1. causes heat
    2. make noises
      1. wear things away
  3. can be reduse by using smooth surface
    1. or lubricant
2. air resistence and water resistence are a type of friction
  1. contact forces
3. upthrust
  1. upwards force from water or air
  2. contact force
noncontact forces
1. gravity
  1. static electricity
    1. magnitism
mass
1. your substance
2. measured in kg
3. weight measeured
  1. force meter and newtons
    1. spring
  2. caused by gravity pulling down
you can decide whether or not something will float due to its density
1. density = mass/volume
  1. units g/cm3
2. water has a density of 1g/cm3
  1. if something has a density under that it wil float in water

Resource summary

	Created by elliemaiangel about 11 years ago