If the time of impact in a collision is extended by 3 times, by hour much is
the force of impact altered?

The force of the impact would be smaller

Explanation:                                                          Examples:

If the force is big then the time would be small (2500N of Force = 10 seconds)

If the force is small then the time would be big (250N of Force = 50 seconds)

Impulse/Collision -> [Ft] = [M (vf-vo)] <- Change in momentum

like poles repel so keep pushing north to north and repels funny to see this

attach the statements so i can answer : )