3. what is the velocity of a truck that has traveled 15 kilometers west in 0.25 hours? 4. if the velocity of…

Explanation:

Step1: Recall velocity formula

The formula for velocity $v=\frac{d}{t}$, where $d$ is the displacement and $t$ is the time. For the truck, $d = 15$ km and $t=0.25$ h. $v=\frac{15}{0.25}$

Step2: Calculate the velocity

$v = 60$ km/h west

Step3: Recall time - distance - velocity relation for sound

The formula $t=\frac{d}{v}$, where $d = 1485$ m and $v = 330$ m/s for sound. $t=\frac{1485}{330}$

Step4: Calculate the time for sound

$t = 4.5$ s

Step5: Recall distance - velocity - time relation for driving

The formula $d=v\times t$, where $v = 88$ km/h and $t = 6.5$ h. $d=88\times6.5$

Step6: Calculate the distance for driving

$d = 572$ km

Answer:

3. 60 km/h west
4. 4.5 s
5. 572 km