Well, lots of things can happen but what you can count on is conservation of momentum of the overall runner, tackler, ground system. Any forces from the ground on the people can change the momentum of the merged runner-tackler system.
If they were both on ice and ran into each other with the same masses and opposite velocities, and stuck, they would both stop.
If one had greater speed or mass or both, that one would push the other back.
If one has bigger cleats, then as the situation evolves, that one wins, but that requires time :)
A football player makes a tackle to stop a touchdown.What will happen to the offensive player?What law of motion applies and why?
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1 answer