Unit 3 Flashcards
1
Q
Impulse and momentum equation
A
J= sum of all forces *t = change in p = m * final velocity minus initial velocity
2
Q
what is the area under a force vs distance graph
A
the work done
3
Q
if the angle between a force and the parallel distance is 90 what is the work
A
0
4
Q
if the angle between a force and the parallel distance is less than 90 what is the work
A
The work is positive
5
Q
if the angle between a force and the parallel distance is greater than 90 what is the work
A
the work is negative
6
Q
If a force is always perpendicular to displacmenet what does that mean for the work
A
there is no work, forces have to be parralel
