Forces Flashcards
1
Q
mass
A
measure of the amount of matter in an object
2
Q
inertia
A
how difficult it is to change an object’s motion
3
Q
centre of mass
A
point through which an object’s weight appears to act
4
Q
resultant force
A
sum of all forces acting on an object
5
Q
Newton’s 2nd law
A
resultant force= mass x acceleration
6
Q
first law
A
if an object is stationary and rf=0 the object will stay stationary
if it is moving and rf=0 it will continue moving in same direction and speed
7
Q
3rd law
A
whenever two objects interact the forces they exert on each other are opposite and equal
8
Q
hookes law
A
f=ke
force applied directly proportional to extension of spring
