Forces

• Forward force

  Air resistance increases when forward force increases

  Until both of them are equal-resultant force is 0N

  It has reached terminal velocity
• Contact forces are forces that are touching
• Mom contact fixes happen to things that are physically separated
• Non contact forces are gravitational forces, electrostatic and magnetic forces
• Weight is the force acting on an object due to gravity
• Weight is measured via a newtonmeter
• 1 joule=1 newton-metre
• A moment is a turning effect of a force
• Centre of mass is where the weight of an object may be considered to act at a single point