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Why do you fall forward when a moving bus decelerates to a stop and fall backward when it accelerates from rest? Subway standees often find it convenient to face the side of the car when the train is starting or stopping and to face the front or rear when it is running at constant speed. Why? Why do you fall forward when a moving bus decelerates to a stop and fall backward when it accelerates from rest? Subway standees often find it convenient to face the side of the car when the train is starting or stopping and to face the front or rear when it is running at constant speed. Why?
Newton’s first law states that, without any external force, if a body is at rest, it will remain at rest and if the body is moving with constant velocity, it will continue to do so.When the moving bus decelerates, due to inertia, the body will tend to move in the forward direction of the bus. Therefore, you fall forward when the moving bus decelerates to a stop. Again, when the bus accelerates from rest, due to inertia, the body will tend to maintain the rest position. That is why; you fall backward when the bus accelerates from rest.The tendency of a body to remain at rest or in uniform linear motion is called inertia. The reference frame to which it applies is called inertial frames. When the train is starting or stopping, there is no net force acting on the observer. So the observer is in the inertial frame. That is why; it is easy to face the side of the car because both the frame (one is observer in the car and the other one is the outside of the car) are in rest. But when the car is running at constant speed, the observer in the car does not remain at rest. The frame is not an inertial frame. That is why; it is easy to face the front or rear when the car is running at constant speed because the car is in the forward direction.
We fall in the forward direction when the bus decelerates to stop because when the bus was in motion,our body was also in motion and when the bus stops then the inertia of our motion tends us to remain in motion and that is why we fall in forward direction.On the other hand,we fall in backward direction when the bus accelerates to start because before accelerates both the bus and we were at rest and when the bus does a motion then the inertia of our motion tends us to remain at rest and that is why we fall in backward direction.
explain why when two teams are having tug of war the team that pushes harder horizontally against the ground wins ?
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