I need to find out why we wear seat belts for my physics homework.Can you please help me?
Responses (3)
the first Newton rule says that an object in motion will continue to move with the same velocity till an opposing force (opposite direction) will decelerate the movement. so, in case you do not have a seat belt and the car hits a wall your body will continue to move towards with the same velocity and having an impact force dependabt on mass and velocity until it hits something which stops it. when the body hits that the time needed to decelerate to zero is almost instant.
the belt will keep you fixed to the car. so, when the car hits the wall the deceleration will not be instant as the materials of the car will oppose the force of the wall. thecond Newton law says that F= delta(m*v)/delta (t). So, the higher the deceleration time, the less is the force needed to stop the passenger and (as the forces are equal but in opposite directions) the lower the impact on the body
People need to wear seat belts and insist that any passengers in the car do so as well because wearing them saves lives in the event of an accident. Another important reason for wearing them is that the law requires it, and there are legal consequences for not doing so