3.5.1: Newton's laws of motion Flashcards
(7 cards)
1
Q
Newton’s 1st law
A
An object will remain at rest or move at a constant velocity unless acted upon by a net force
2
Q
Net force
A
The vector sum of all forces acting on an object (aka resultant force)
3
Q
Linear
A
Acting in the same plane, or in a straight line
4
Q
Newton’s 2nd law
A
Rate of change of momentum of an object is directly proportional to the resultant force acting upon it and the change in momentum is in the same direction as the force
5
Q
Newton’s 3rd law
A
When body A exerts a force on body B, body B exerts an equal and opposite force on body A of the same type
6
Q
Impulse
A
The force acting on an object multiplied by the time for which it acts (aka change in momentum)
7
Q
1 Newton
A
The force that gives a mass of 1kg an acceleration of 1 ms^-2
