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A 60-kg person is traveling in a car moving at 16 m/s, when the car hits a barrier. The person is not wearing a seat belt, but is stopped by an air bag in a time interval of 0.20 s. Determine the average force that the air bag exerts on the person?

Respuesta :

Using conservation of momentum, we can solve for the force that the air bag exerts on the person.

Recall the equation for momentum (p):

[tex]p = mv = F*dt[/tex]

We can solve for total momentum, then divide by out time interval. This gets us:

[tex](60kg)(16m/s) = F(0.2s) F = 4800N[/tex]

F = 4800N