Question

what information must a person have if they are asked to determine an objects speed?
distance and change in position
distance and period of time
distance and direction
period of time and direction

Explanation:

Speed is calculated using the formula \( speed=\frac{distance}{time} \). So, to find speed, we need to know the distance an object has traveled and the period of time it took to travel that distance. Direction is related to velocity (a vector quantity), not speed (a scalar quantity). Change in position is also more relevant to velocity concepts.

Answer:

distance and period of time