Newton's second law for car force problem

AI Thread Summary
To solve the car force problem, apply Newton's second law, F = m * a, where 'm' is the mass and 'a' is the acceleration. The deceleration of the car is given as 1.1 g, which converts to approximately 10.78 m/s² (1.1 * 9.8). Calculate the total mass of the system (car plus driver) to find the force acting on the driver. Use the mass of the driver (80 kg) and the calculated deceleration to determine the force experienced by the driver. This approach will yield the necessary insights without directly providing the final answer.
Kahsi
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Hi.

I have this problem:

The fastest cars can travel at 350km/h. When you take the foot of the gaspedal the air will decrease the speed of the car. This leads to a retardation (I hope it's the right word for it) at 1.1 g. Which force (N) will affect the driver (80kg)? The weight of the car is 600 kg.

Which formula should I use? I don't want anyone to give me the answer just like that, instead I would like some tips.


Thank you in advance :smile:
 
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Use the Newton's second law to find the decelaration of the (car +driver) system. Again apply the same law to the driver alone using the above found decelaration to find the force on him.
 
Kahsi said:
The weight of the car is 600 kg.

You mean mass.
 
Yea, mass. Sorry.

Newtons second law

F = m * a

I have m (the mass) But I don't have the acceleration or the Force.
 
the 1.1g is the accelaration,
1g=9.8 m/s^2
 
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