OK. If you dropped a player piano....
>>But a piano doesn’t have motors..<<
Or wings that can actually push you down. People don’t understand that in a car, the fastest you can accelerate downward is the speed at which you fall. You can feel weightless, but that is about it.
In an airplane, the wings can PUSH you down HARD. That is how a friend of mine, a flight attendent, in bad weather, was slammed against the ceiling of the cabin and then slammed agains the armrest of one of the seats and broke his arm.
An aircraft can lose altitude shockingly fast if it’s engines and aerodynamics are helping the process.
I know you know that. I’m just amplifying what you said... ;)