8.2 Using F=MA Flashcards
1
Q
when an object is acted on y two unequal forces what way does the object accelerate
A
in the direction of the larger force
2
Q
how would you find the acceleration of 2 unequal forces
A
F1-F2=ma
(resultant force)
3
Q
how do you find the acceleration of a car towing a trailer and the acceleration of the trailer
A
F - T = Ma
force on the car - tension in the tow bar
T = ma
combining the equations gives
F = (M+m)a
4
Q
rocket thrust =
A
T= mg + ma
therefore rocket thrust must overcome the weight of the rocket for it to take off
5
Q
what equation is used for lift problems
A
T-mg =ma
6
Q
A
