I still believe that it has to be a formula that this force (Angular Momentum I believe) can be calculated taking in consideration the speed, height and weight of the bike, rider's weight and gravity center.

Its like this; A bike with a mass of 15Kg, having a rider with a mass of 80 kg hits a parking concrete barrier at 5 km/h, where hitting the barrier equals with brake force.

In this example, at this speed, chances are the rider will not fly over the handlebar.

Yet in the same equation, if we change the variable "speed" with 15 km/h, chances are the rider will start sailing thru the air.

Now the case scenario, only that the rider would have 120 kg. Most likely the bike wouldn't tip over. (due to rider's mass)

Now if we take this last rider's mass of 120kg but we increase the variable "speed at 40 km/h, chances are the bike will tip over

The question is how do I calculate the force of the impact occurred at 5km/h and at 15 km/h knowing the speed, and the mass of both rider and bike.

Thank you!