Question

9. You drive a car from Milwaukee to Chicago, which is a distance of 150km and it takes you 95

min. What is its velocity in km/hr and m/s?

Answer 1

For this case we have to, by definition:

`v = \frac {x} {t}`

Where:

v: It's the velocity

x: It is the distance traveled

t: It is the time spent

1 hour equals 60 minutes and 1 minute equals 60 seconds.

On the other hand:

1 kilometer equals 1000 meters

So:
`\frac {150} {95} \frac{km} {min} * \frac {1} {60} \frac {min} {sec} * \frac {1000} {1} \frac {m} {km} = \frac {150 * 1000} {95 * 60} \frac {m} {sec} = \frac {15000} {5700} \frac {m} {sec} = 2.63 \frac {m} {sec}`

On the other hand:
`\frac {150} {95} \frac{km} {min} * \frac {60} {1} \frac {min} {hr} = \frac {150 * 60} {95} \frac {km} {h} = 94.74 \frac {km} {h}`

ANswer:

`2.63 \frac {m} {sec}\\94.74 \frac {km} {h}`