1) What unit is speed measured in?

Question

2) Why is it important to include units when describing motion?

I've read this entire lesson. I just can't seem to find these answers.

Answer 1

1. distance/time, suchs as meter/sec, or furlong/year

2. without units, it is meaningless. Example you have 3 of them. Is that each,or three bushels, or three dozen

Your mom says go to the store and get toothpaste. You get there, so do you get 1/2 of a tube, a tube, or a sixpack? Gotta have units. So when you mom says to your get some brains, you have to ask, it is mandatory, how much?