Using conservation of momentum, we can solve for the force that the air bag exerts on the person.
Recall the equation for momentum (p):

We can solve for total momentum, then divide by out time interval. This gets us:
F = 4800N
Answer:
About 8.3 minutes
Explanation:
Use the formula for velocity as the distance covered by the light divided the time it takes:
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Use the information about the speed of light in vacuum: 
and the information you are given regarding the distance between Sun and Earth: 
to solve the first velocity equation for the unknown time "t":

we can convert second into minutes by dividing by 60: 500 s = 500/60 minutes = 8.3333... minutes