- #1
Psip
- 13
- 0
Homework Statement
An object moving with a velocity whose components are [4m/s,-1m/s,3m/s] is acted on by a force whose components are [-5N,0,+5N]. What is the power of the energy transfer involved in this interaction?
Homework Equations
Power=F*v
The Attempt at a Solution
4m/s*-5N= -20W
-1m/s*0=0W
23m/s*5N=15W
(202+152+02)sqrt=Magnitude = 25W which could be the answer but I'm not sure. I just don't know how negative velocity affects power because P=Fv so if F is 5N and v=-3m/s then it would seem like -15W is the answer but I am not sure. I also don't really have experience with 3-component vectors.