Question

what equation use to calculate speed?
d=ts
t=d/s
s=d/t

Explanation:

Step1: Recall speed definition

Speed ($S$) is the distance ($D$) traveled per unit time ($T$), so it is calculated by dividing distance by time.

Step2: Match to correct formula

The formula for speed is $S = \frac{D}{T}$.

Answer:

$\boldsymbol{S = \frac{D}{T}}$