What is the force of 1000 kg car going a steady 10 km/s and hitting a wall?

Question

And whats the formula?

Answer 1

It can't be easily calculated, it depends on the design of the car. It does not all stop at the same time. The front end crumples and absorbs some of the kinetic energy, for example. Other parts may crumple. The shock absorbers in the bumpers absorb some. etc.

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Answer 2

The answer depends on how long does the collision between the car and the wall last? Does the car stop at the end of the collision? If not, then what is its velocity after the collision?

If we know this, then we can find the acceleration on the car by the wall. Multiply this with car's mass to get the force on the car by the wall. By Newton's third law, this is the force on the wall by the car.

Suppose that the car stops after time t. Then acceleration of the car = (0 - u)/t = -u/t

Negative sign because car slows down.

Magnitude of the force = mu/t, where m = mass of car.

Given info are not sufficient to calculate the force. But we can calculate the impact of the force.

Impack = force * time = mu = 1000 kg *10 km/s = 10,000 kg-km/sec

We can also write 1000 kg * 10 km/s = 1000 kg * 10,000 m/s = 10^7 kg-m/sec = 10^7 N-s

Answer 3

Enough to s***w up your Car and give you a concussion.

Answer 4

If there is no acceleration then there is no net force acting on the car. This would be the case right before the car hits the wall, and after the car hits the wall and comes to a stop. There is not enough information to figure out the force the wall exerts on the car as the collision occurs. With more information you could use the general force equation, F=ma, or you could use the momentum equation, F = dp/dt.  

Answer 5

f=m*A so 10000kgkms