When a passenger vehicle crashes into an immovable object it will come to complete stop in what length of time?

It is impossible to provide a single, definitive answer to this question as the stopping time of a passenger vehicle involved in a collision will depend on a number of factors, including the vehicle's speed at the time of impact, the type and condition of the road surface, and the angle of impact.

However, as a general rule, it is possible to estimate the stopping time of a vehicle using the following formula:

d = vt + (v^2/2*a)

Where:

- d is the stopping distance in metres

- v is the initial velocity in metres per second

- t is the time taken to stop in seconds

- a is the deceleration in metres per second squared

For example, if a vehicle is travelling at a speed of 50 km/h (13.9 m/s) when it collides with an immovable object and decelerates at a rate of 9.8 m/s squared (the acceleration due to gravity), it will come to a complete stop in approximately 1.43 seconds.

However, it is important to note that this is just a simplified example and that the actual stopping distance and time for a particular collision may vary significantly depending on the specific conditions involved.