Question

carol and juan were playing with carols new train set. they pushed the trains around the track. they tried four different sections of track. what is the average speed of the train on track 4?

track	length (cm)	travel time (s)
2	20	2
3	60	6
4	40	6

Explanation:

Step1: Recall speed formula

The formula for speed is $v=\frac{d}{t}$, where $v$ is speed, $d$ is distance, and $t$ is time.

Step2: Identify values for Track 4

From the table, for Track 4, the length (distance $d$) is $40$ cm and the travel - time $t$ is $6$ s.

Step3: Calculate speed

Substitute $d = 40$ cm and $t=6$ s into the speed formula: $v=\frac{40}{6}=\frac{20}{3}\approx6.66$ cm/s.

Answer:

$6.66$ cm/s