Answer:
100 m displacement east and total distance of 300 m
Explanation: Let's break this down, if the sprinter runs 200 meters west, then 100 meters east, than her displacement would be 100 meters east, since that deviates from her initial direction. Her total distance is the 200 meters west plus 100 meters east
Work is transfer of energy in an object when it travel some distance by external force,
Work= force × displacement
First of all, the question is worded somewhat ambiguously because mass does not necessarily imply that there is a force (i.e. an object could be stationary in a system with no gravity and not have a force, or something of the like). Moreover, simply because an object is twice the mass does not mean the force will change.
However, we know from Newton's second law that F = ma. Therefore, force will increase or decrease proportionally with mass. This means if an object maintains a contestant acceleration and its mass doubles, the force that it provides will also double.