Calculating Force of Impacts on Objects

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1. For example. If you weigh 175lbs and you were

running into a wood fence at 7km/per hour how much

force is being applied the Wood fence?

Another Example. the TGV Train in France reached its

highest speed at 574km/per hour it weighs 415tons,

if this train were to collide with an abandon car on

the tracks how much force would be applied to the

abandon car on the tracks if the train were going

570km/per Hour and the Train weighs 415tons

(914,918lbs).

another example: A freight Train weighing 10,000

tons going at a speed of 50km/per hour were to hit

an abandon car how much force is being applied to

the car on the tracks?

The distance of the Fence is 40ft.

The distance of the Car is 100ft.
 
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The force applied depends on the details of the collision. Given an impact velocity and masses, you can't find the force associated with a collision solely from that info.
 
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