A. They make exchanges between mass and force
B. They require only one force to do work
C. They only create kinetic energy
D.They decrease the amount of work needed
I'm leaning towards B, but I don't want to get it wrong, so I thought I'd get a second opinion.
B. They require only one force to do work
C. They only create kinetic energy
D.They decrease the amount of work needed
I'm leaning towards B, but I don't want to get it wrong, so I thought I'd get a second opinion.
-
You are right, b is the correct answer
P.S. You shouldn't cheat
P.S. You shouldn't cheat