A body falls from rest. If the resistance of the air is proportional to the speed, and if the limiting speed is 160ft/s, find the speed at the end of 5 seconds.
thank you po..
Net force = weight - resistance
Integrate both sides
Do you have the value of the mass, m? It seems we cannot eliminate m here...
For a second thought, I think you can use this equation for this problem...
Update us what you've got, we will appreciate it much.