can an object be moving if its upward force balances its downward force (1 Viewer)

[.ben]

can an object be moving if its upward force balances its downward force? i used to think by common sense this was an automatic no. but i read somewhere that if the forces cancel then acceleration will be zero on the particle but that does not necessarily mean a particle will be stopped, it could still be moving with a constant velocity. is this true?

 

[bboyelement]

yeh i would think so i mean f=0 and f=ma so yeh makes sense

 

[Slidey]

Also, unless you're speaking of a particle in one dimension, the velocity can be zero upwards (and hence down), but the particle could still be moving because a non-zero "sideways" velocity... speaking strictly in terms of a two-dimensional space and relative to two perpendicular axis.

 

[.ben]

ok thanks

 

[gamecw]

force involves mass and acceleration..
force = 0 accleration = 0
integrate accleration with respect to time, u'll get a constant velocity (initial v).