Also why aren’t we constantly sucked back into our chairs like when u accelerate in a car quickly?
In:
It’s important to remember that objects don’t change speed or direction unless something makes them (i.e. a force is applied to the object).
As a vehicle (e.g. a car or plane) accelerates, initially you don’t move at the same speed as the vehicle. Don’t forget – a force has to be applied to you in order to make you speed up. It takes a moment for the speeding up plane seat to apply its forces to you to speed you up.
This is why you feel acceleration – it’s a change of speed and the seat is ‘pushing’ you to go faster and to match the speed of the car.
So, when the car is travelling at a constant speed and when you are travelling at the same speed as the car, you carry on moving at the same speed and in the same direction. No force is needed, so you don’t feel anything.
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