i believe it's <u>B. An atom of iron</u>
Answer:
Option D, The work done by each force is negative
Explanation:
When both the forces are negative, then irrespective of which force is large or small, the net force will definitely negative. A negative force indicates reduction in kinetic energy of particle. Since mass is constant , it is the speed which reduces and produces negative work. Reduction in speed is contrasting to the statement give in the question. Hence, option D is not possible.
An organ I believe that is the correct answer
The next step is to experiment. Most people say hypothesis instead of prediction.
The awnser is D.for the question
