In which situation would the use of a vector quantity be most appropriate?

Question

determining whether a van is moving faster than the speed limit
determining the net force that is acting on an object
determining the high and low temperatures on any given day
determinig whether it takes more time to melt ice or to melt butter

Answer 1

The use of a vector quantity would be most appropriate in the situation of determining the net force that is acting on an object.

Vector quantities have both magnitude and direction, which is essential when calculating forces, as forces are vector quantities. Each force acting on an object can be represented as a vector, and to find the net force, you can sum these vectors, taking their directions into account.

In contrast, the other options relate to scalar quantities (like speed limits, temperatures, and times), which do not require consideration of direction.