physics combined



scaler vector - only has magnitude and size

eg- mass, energy, distance, speed, density

vector quantities - both have magnitude 

eg- force, velocity, momentum

contact forces - two objects physically touching

eg- friction, air resistance

non contact - physically seperated

eg- electrostatic, magnetic, gravatitional force

oppisite magnet poles- attract

like magnet poles- repel


weight = mass × gravitational field strength

work done = force × distance

1 joule= 1 newton metre

  • elastic deformation is reversed when the force is removed
  • inelastic a permanent change


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