Proving and Explaining Impulse Approximation

The video tutorial explores the concept of impact forces when stepping off a wall, comparing scenarios with and without bending knees. It introduces the impulse approximation, which assumes that during a short collision, the impact force is much larger than other forces, making them negligible. The tutorial calculates the force normal and evaluates the accuracy of the impulse approximation, revealing that bending knees results in a significant error due to a longer collision time. The video concludes that shorter collision times yield more accurate impulse approximations.

Calculate the force normal when bending the knees and when not bending them, based on the given mass.

Discuss the relative error in the impulse approximation for both the bent knee and not bent knee cases.