Why is it important that all scientists use the metric system? .

It is very important that all scientists use the metric system because it is universal - America is the only country that doesn't use the metric system, whereas in the rest of the world, metric system is used. So as not to confuse numbers and do something incorrectly, it is better to use metric system instead. 

The Moon

Explanation:

F=MA

160=98a

a=1.632563061m/s²

This value is closest to the Moon's value