Physics

Average speed is just total distance divided by total time—but you need to watch your units carefully. Convert both the distance to meters and the time to seconds before you divide, so your answer comes out in $\text{m/s}$ naturally rather than trying to convert at the end. This is a great reminder that unit conversion is part of the calculation, not an afterthought.

Average speed is just total distance divided by total time—but you need to watch your units carefully. Convert both the distance to meters and the time to seconds before you divide, so your answer comes out in $\text{m/s}$ naturally rather than trying to convert at the end. This is a great reminder that unit conversion is part of the calculation, not an afterthought.