Which of the following units could be used for the average speed of an object? a. kilometers per hour (km/hr) b. miles per hour (mi/hr, mph) c. meters per second (m/s) d. all of these

Answer : The correct option is, (D) all of these

Explanation:

Average speed : It is defined as the ratio total distance to total time.  It is a scalar quantity that means it is defined by the magnitude only.

Formula used :

The common units of average speed are miles per hour (mph), kilometers per hour (kph), meters per second (m/s), or feet per second (ft/s).

The S.I unit of average speed is meter/second (m/s).

Hence, all of the units could be used for the average speed of an object.

are their multiple choices ?

explanation:

real, smaller and upside-down.   so the answer should be b.