Please they are very short. consider them as multipart questions. please.

1. During cell migration, fibroblasts can generate traction forces of approximately 2 ~ 104 udynes. What is the equivalent force in kN? 2. Endothelial cells in random motion were recorded to move at the lightning speed of 27 um h-1,what would their speed be in miles per second? 3. Which is moving faster, a plane moving at 400 miles per hour or a molecule moving at 6.25 ~ 1015 nm min-1? Show the answer in units of mm per second