Question
Why are seat belts provided in automobiles and aeroplanes?
Solution
When the vehicle suddenly moves, it results in a sudden state of motion of the vehicle. Hence, our feet which is in contact with the vehicle comes to motion. but, the upper part of our body which is at rest, tends to remain at rest due to the property of inertia of rest.
Therefore, Seat belts are provided to protect the passengers from falling backward or forward during such situations.
