An 80-kg student collides with a padded wall in the gymnasium while moving at 6.0 m/s. Because he collided with a padded wall instead of a concrete wall, the time of collision was
increased by a factor of 10. What affect does this increase in collision time have upon the
force and the impulse that he experiences? Select two answers.
1. Colliding with the padded wall will make the force 10 times greater.
2. Colliding with the padded wall will make the force 10 times smaller.

  2. Colliding with the padded wall will make the force 10 times smaller

Explanation:

Impulse is the product of force and time. Its units are those of momentum. Assuming the change in momentum (impulse) remains the same, the increase in time means the force will be decreased by the same factor.

Colliding with the padded wall will make the force 10 times smaller

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach