Question

Qi/ a cargo ship travels at an average speed of 20m/s. how long will it take to travel between two
ports which are 1000km apart?

Answer 1

Answer:

50000 seconds

Explanation:

Classic dimensional analysis question!

$\frac{1000\text{km}}{20\text{m/s}} * \frac{1000\text{m}}{1\text{km}}=50000\text{s}$