An object is dropped from a helicopter that is stationary and eventually attains terminal velocity. What occurs to the object's acceleration from the moment it leaves the helicopter until it reaches terminal velocity?
- AIt decreases to $9.81\,\text{m s}^{-2}$.
- BIt decreases to zero.
- CIt increases to $9.81\,\text{m s}^{-2}$.
- DIt remains constant at $9.81\,\text{m s}^{-2}$.