Question

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

Explanation:

Speed is defined as the distance traveled per unit of time. Direction is not needed as speed is a scalar quantity. Change in position is related to displacement, not speed calculation. So distance and period of time are required.

Answer:

C. distance and period of time