It depends on your vehicle. Majority of cars made after 2005 are equipped with the new advanced airbags or aka "3rd generation" airbags. Your car can actually take into effect how far you are from the steering wheel, if you're wearing your seat belt, how much you weigh, etc. and based on those fact decide during an accident if your airbag is needed. Although trust me, the car doesn't always make the right decision.
Airbags deploy at up to 300 km/hr.
The minimum speed set by the government for airbags to deploy is 25 mph. The 2007 PT Cruiser should have the airbags deploy at this rate of speed or less. It also depends on the type of collision, when the airbags will deploy.
Yes if the car is hit hard enough the sensors will deploy the airbags
Air bags deploy when someone gets into an accident.
crashing
there is no minimum speed the car can be parked and someone run into it and the airbags can deploy
they can deploy 1min to thirty seconds
no
The force of the collision , with the front of your vehicle , has to be great enough for the airbags to deploy
I need answer to this ? also
http://www.nhtsa.dot.gov/people/injury/airbags/airbags03/page3.html
200 mph