# Question Video: Determining the Formula for Speed Science

Which of the following is the correct formula for the speed of an object? [A] Speed equals distance moved multiplied by time moved for. [B] Speed equals distance moved divided by time moved for. [C] Speed equals time moved for divided by distance moved.

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### Video Transcript

Which of the following is the correct formula for the speed of an object? (A) Speed equals distance moved multiplied by time moved for. (B) Speed equals distance moved divided by time moved for. (C) Speed equals time moved for divided by distance moved.

To see which formula is correct, let’s think about an object in motion. The faster this object moves, the greater its speed will be. A higher speed means the object moves a greater distance in the same amount of time. Or the object could move the same distance but take less time. We can say the object’s speed increases in two different cases: first, when it moves a greater distance in the same amount of time and second when it moves the same distance in less time. Looking at our answer choices, the only one that is true for both of these conditions is option (B) speed equals distance moved divided by time moved for.