Frictional Force and Terminal Velocity
Friction is always there to slow things down
- If an object has no force propelling it along it will slways slow down and stop because of friction.
- Friction always acts in the opposite direction of movement.
- To travel at a steady speed between two surfaces in contact, or when an object passes through a fluid (drag).
Resistance or "Drag" From Fluids (air or liquid)
Most of the resitive forces are caused by air resitance or "drag". The most important factor by far in reducing drag in fluids is keeping the shape of the object streamlined. The opposite extreme is a parachute which is about as high drag as you can get.
Drag increases as the speed increases
Frictional forces from fluids always increase with speed. A car has much more friction to work against when travelling at 70mph compares to 30mph the engine has to work much harder just to maintain a steady speed.
When falling objects first set…