Answer
The correct answer is:
(b) $2\frac{H}{\Delta t}$
Work Step by Step
The correct answer is:
(b) $2\frac{H}{\Delta t}$
The average speed is $\frac{total~distance}{total~time}$
In this case, the total distance is $2H$ and the total time is $\Delta t$
Therefore, the average speed is $\frac{2H}{\Delta t}$
