# UMass Amherst KIN 430 - problem-set3-2018sp (2 pages)

Previewing page 1 of 2 page document
View Full Document

# problem-set3-2018sp

Previewing page 1 of actual document.

View Full Document
View Full Document

## problem-set3-2018sp

48 views

Pages:
2
School:
University of Massachusetts Amherst
Course:
Kin 430 - Biomechanics
##### Biomechanics Documents
• 2 pages

• 2 pages

• 6 pages

• 4 pages

• 4 pages

• 2 pages

• 4 pages

• 9 pages

• 3 pages

• 2 pages

• 3 pages

• 2 pages

• 4 pages

• 3 pages

• 2 pages

• 5 pages

• 5 pages

• 6 pages

• 3 pages

• 14 pages

• 9 pages

• 15 pages

• 7 pages

• 7 pages

• 2 pages

• 2 pages

• 2 pages

• 3 pages

• 6 pages

Unformatted text preview:

KIN 430 Biomechanics Spring Semester 2018 Problem Set 3 20 points Due on Wednesday April 11th 2018 in class To receive full credit you must hand the completed problem set directly to one of the course instructors do not slip it under a door or leave it in the front office Answer the following questions by placing your answers in the spaces provided Do all of your calculations on separate sheets of paper clearly indicating which calculations go with which problem Staple the separate sheets of paper to this problem set before you turn it in You must show your calculations to receive full credit even if you have the correct answers Don t forget to include proper units 1 4 pts A person with a body mass of 68 kg is pushing off against the ground to perform a broad jump while wearing a 7 5 kg weighted vest to generate a training overload There is a wind that has a component blowing in the person s face of 121 N and a component blowing downward of 72 N At one point in the push off the person generated a vertical ground reaction force of 2637 N and an anterior posterior ground reaction force of 389 N What was the resultant acceleration of the person s center of mass magnitude and direction Center of mass acceleration 2 4 pts During the warm ups for the 2018 World Vertical Jumping Games nearly everyone on the planet did a maximal effort jump together Seven billion people all jumped at the same time producing an acceleration of the Earth of 2 4 10 12 m s2 If the mass of the Earth is 5 9 1024 kg what was the average force generated per person Average force per person 3 4 pts While landing from a jump a person generated the vertical ground reaction force shown in the diagram below solid dark line Also shown is the magnitude of the person s body weight 500 N dashed dark line Using the graph determine the total positive impulse the total negative impulse and the net impulse acting on the body over the time interval from 0 0 to 0 4 s Total positive impulse Total negative impulse

View Full Document

Unlocking...