Question

The winner of a 200 mile race drove his car to victory at a rate of 140.2159 mph. What was his time​ (to the nearest thousandth of an​ hour)?

Answer 1

Answer: 1.43 h

Step-by-step explanation:

Velocity is $V$ is defined as the change in position (displacement) $d$ of an object in a specific time $t$:

$V=\frac{d}{t}$

Where:

$V=140.2159 mi/h$ is the car's velocity

$d=200 mi$ is the distance the winner car traveled

$t$ is the time

Isolating $t$:

$t=\frac{d}{V}$

Solving with the given information:

$t=\frac{200 mi}{140.2159 mi/h}$

$t=1.426 h \approx 1.43 h$ This is the winner's time