forces Flashcards
1
Q
what is the center of mass
A
where the mass of the object appears to act
2
Q
how do you determine the center of mass of an irregular object
A
hang it from many points, draw vertical line from where the object is attached on the string, repeat until lines intersect
3
Q
is there always a right angle between the normal and the frictional force?
A
yes
4
Q
what is the relationship between drag force and velocity
A
d proportional to V squared
5
Q
what is the relationship between drag force and area
A
directly proportional
6
Q
what is the resultant force in terminal velocity
A
0, because it isn’t accelerating
