in a car, how does an air bag minimize the force acting on a person during a collision?\no it increases the…

in a car, how does an air bag minimize the force acting on a person during a collision?\no it increases the change in momentum of the person.\no it decreases the change in momentum of the person.\no it increases the time it takes for the person to stop.\no it decreases the time it takes for the person to stop.

in a car, how does an air bag minimize the force acting on a person during a collision?\no it increases the change in momentum of the person.\no it decreases the change in momentum of the person.\no it increases the time it takes for the person to stop.\no it decreases the time it takes for the person to stop.

Answer

Brief Explanations:

According to the impulse - momentum theorem $J = F\Delta t=\Delta p$. In a collision, the change in momentum $\Delta p$ of the person is fixed by the initial and final velocities. An air - bag increases the time $\Delta t$ over which the force acts. Since $F=\frac{\Delta p}{\Delta t}$, when $\Delta p$ is constant, increasing $\Delta t$ decreases the force $F$.

Answer:

It increases the time it takes for the person to stop.