Created by alex.examtime9373
about 7 years ago


Copied by tatemae.honne
about 7 years ago


Question  Answer 
Force  That which can cause acceleration 
Unit of force  Newton (N) 
Newton's 1st law of motion  A body will remain at rest or continue moving at constant velocity unless acted upon by an unbalancing external force 
Application of Newton's 1st Law  Seatbelts in cars are used to stop passengers continuing at a constant velocity when the car decelerates rapidly 
Newton's 2nd law of motion  The rate of change of momentum is proportional to the applied force and takes place in the direction of the force 
Application of Newton's 2nd Law  Heavier objects require more force to move the same distance as lighter objects 
Special case of Newton's 2nd Law  F = ma 
Newton's 3rd law of motion  For every action there is an equal and opposite reaction 
Application of Newton's 3rd Law  When a rocket takes off, the rocket pushes down with the force of its engines, and this causes the ground to push the rocket upwards with an equal force 