negative work
when work is positive and when playing is negative
Yes Work can be positive or Negative.
No, this will not work. Postitive to Negative/Negative to Positive will work.
what is positive and negative
Without friction, cars wouldn't work.
Positive.
There are different conventions as to what work is negative and what work is positive. The convention used by engineers and physicists is that work done BY the system on its surroundings is positive while work done ON the system by its surroundings is negative. Chemists reverse these conventions.
If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.
A Negative plus a positive = a negative because negative and a positive cannot work together Negative + Negative= Positive Positive + Positive = Positive when your dealing with numbers such as : -2 + 2 would equal a negative 4 -2 +-2 would equal a positive 4
Friction and Air Resistance.
Work is done when a force is applied over a distance. If the force acts opposite the direction of motion, like friction, then the work is negative.
In this case, V would be negative, and work w would be positive.