Question

calculating average velocity
calculate the average velocity of the cart for each fan speed. round your answers to the nearest tenth.
the cart with low fan speed has an average velocity of
the cart with medium fan speed has an average velocity of
the cart with high fan speed has an average velocity of
elapsed time to finish line (s) 7.4 6.4 5.6
total distance (cm) 500 500 500
average velocity (cm/s) ? ? ?

Explanation:

Step1: Recall velocity formula

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

Step2: Calculate for low - fan speed

For low - fan speed, $d = 500$ cm and $t=7.4$ s. So $v_1=\frac{500}{7.4}\approx67.6$ cm/s.

Step3: Calculate for medium - fan speed

For medium - fan speed, $d = 500$ cm and $t = 6.4$ s. So $v_2=\frac{500}{6.4}\approx78.1$ cm/s.

Step4: Calculate for high - fan speed

For high - fan speed, $d = 500$ cm and $t = 5.6$ s. So $v_3=\frac{500}{5.6}\approx89.3$ cm/s.

Answer:

The cart with Low fan speed has an average velocity of $67.6$ cm/s.
The cart with Medium fan speed has an average velocity of $78.1$ cm/s.
The cart with High fan speed has an average velocity of $89.3$ cm/s.