What is N3L
Force exerted by a body on a second body is equal in magnitude but opposite in direction to the force simultaneously exerted by second on first body
Conditions for action-reaction pair of forces
- Same type
- Same magnitude
- Opposite direction
- Different bodies
Define weight
Gravitational force exerted by source mass on body
Define normal force
Force exerted by contact surface on body
Define linear momentum
Product of a body’s mass and velocity
(p=mv)
What is N1L
Body at rest will stay at rest and body in motion will continue to move at constant velocity unless acted on by an external resultant force
What is N2L
Rate of change of momentum of a body is directly proportional to the external resultant force acting on it and is in the same direction as the external resultant force
Define mass
Property of a body that resists change in motion
Define inertia
Natural tendency of a body to obey N1L
