Dynamics of a particle moving in a straigh line

1) A particle will remain at rest or will continue to move with constant velocity in a straight

line unless acted on by a resultant force.

2) For a particle with constant mass, m kg, the resultant force F N acting on the particle and

its acceleration a m s^-2 satisfy the equation F = m a.

3) If a body A exerts a force on a body B then body B exerts an equal force on body A but in

the opposite direction.