Question

question 4: which measurements are required to calculate the average speed of a car driving on a road?
a. time and distance
b. time and direction
c. mass and distance
d. mass and direction

Explanation:

To calculate average speed, the formula is \( \text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}} \). Mass and direction are not related to speed calculation (mass is for momentum/force, direction is for velocity, a vector). So time and distance (option A) are needed. The selected option C is incorrect.

Answer:

A. time and distance