Deck 1: What Is Biomechanics

Question 1

When attempting to balance your checkbook, you discover that your figures show a different balance in your account than was calculated by the bank. List an ordered, logical set of procedures that you may use to discover the error. You may use list, outline, or block diagram format.

Answer 1

List a logical procedure to solve an error. A checkbook balance does not equal the balance calculated by the bank.
1. Obtain a deposit and withdrawal list from the checkbook and the bank.
2. Cross check each transaction to find the discrepancy in value transferred.3. Once the transaction that does not match is found, find out what the transaction was.
4. Determine whether the bank or checkbook value is incorrect.
5. Change the value of the source with the incorrect charge.

Question 2

5 kg ball is kicked with a force of 40 N. What is the resulting acceleration of the ball?

Answer 2

List the given information from the problem.
Mass of the ball is 0.5 kg
Force that the ball is kicked is 40 N.
The unknown variable is to find the resulting acceleration of the ball, given the information above. Thus, the unknown variable is acceleration a. To obtain the acceleration a, divide mass m from force F.
To obtain the acceleration of the ball, substitute 0.5 kg for mass and 40 N for force in the equation below.
The acceleration of the ball is 80 m/s 2.

Question 3

List 8-10 websites that are related to biomechanics, and write a paragraph describing each site.

Answer 3

List biomechanical websites and describe what each is all about.
www.jbiomech.com/
This is the website for the Journal of Biomechanics. This is a compilation of peer reviewed journal articles written by health care professionals. Studies on biomechanics are conducted, data is collected and the journals are written to spread knowledge.
isbweb.org/
This is the website for the International Society of Biomechanics. The society holds yearly meetings to bring together and discuss new and innovative ideas relaying to biomechanics. This is a great practice, as many health care professionals can come to these meetings and learn new techniques and what specific things are working to improve patient biomechanics.
wcb2014.com/
This is a website for the World Congress of Biomechanics. The society holds meetings every four years to bring together and discuss new and innovative ideas relaying to biomechanics. These meetings are held all across the world and is a great practice, as many health care professionals from around the world can come to these meetings and learn new techniques and what specific things are working to improve patient biomechanics.
http://www.biosports.net
Biosports is a clinic in Washington that treats rehabilitation patients using the most innovative techniques available. The staff include many sports medicine trained physicians that focus on the rehabilitation of patients with biomechanical shortcomings. This clinic focuses on preventative care using a proactive approach to treat patients.
www.barefootrunning.fas.harvard.edu/
This website is run by Harvard and focuses on the biomechanics of running in relation to the foot. The biomechanics of foot strike and lift during running is closely analyzed and summarized on this website. Many clinical findings and peer reviewed journals are listed and discussed to educate on the biomechanics of the foot.
http://www.isbs.org
The International Society of Biomechanics in Sports hosts this website. This society holds yearly conferences to bring together and discuss new and innovative ideas relaying to biomechanics in sports. This is a great practice, as many health care professionals can come to these meetings and learn new techniques and what specific things are working to improve patient biomechanics in the sports division.
http://www.fieldmuseum.org
The Field Museum is a museum in Chicago, IL that focuses on the natural biomechanics of humans and animals. This museum showcases how the natural biomechanics of the body work and why they work. This is a very interactive museum that allows its patrons to dive deep into the engineering of the human and animal bodies to learn how biomechanics work.
http://www.appliedbiomech.com
This company is called Applied. Biomechanics and provides a consulting service to investigations of accidents. The company is hired to assess accidents to determine what happened when the accident occurred. The use of biomechanics is highly applied in the process of analysis.

Question 4

Sarah goes to the grocery store and spends half of her money. On the way home, she stops for an ice cream cone that costs $0. 78. Then she stops and spends one-fourth of her remaining money to settle a $5.50 bill at the dry cleaners. How much money did Sarah have originally?

Question 5

Write a brief discussion about how knowledge of biomechanics may be useful in your intended profession or career.

Question 6

Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans Sprouts at $2.50 per share. He places 60% of the money in P.S., 30% in N, and 10% in B S. With market values changing (P.S. down $3.12, N up 80%, and B S up $0.20), what is his portfolio worth six months later?

Question 7

Choose three jobs or professions, and write a discussion about the ways in which each involves quantitative and qualitative work.

Question 8

The hypotenuse of right triangle ABC (shown here) is 4 cm long. What are the lengths of the other two sides?

Question 9

Write a summary list of the problem-solving steps identified in the chapter, using your own words.

Question 10

In triangle DEF, side E is 4 cm long and side F is 7 cm long. If the angle between sides E and F is 50 degrees, how long is side D?

Question 11

Write a description of one informal problem and one formal problem.

Question 12

An orienteer runs 300 m north and then 400 m to the southeast (at a 45° angle to north). If he has run at a constant speed, how far away is he from the starting position?

Question 13

Step by step, show how to arrive at a solution to one of the problems you described in Problem 6.

Question 14

John is out for his daily noontime run. He runs 2 km west, then 2 km south, and then runs on a path that takes him directly back to the place he started at.
a. How far did John run?
b. If he has run at an average speed of 4 m/s, how long did the entire run take?

Question 15

John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John?

Question 16

Two schoolchildren race across a playground for a ball. Tim starts running at a distance of 15 m from the ball, and Jan starts running at a distance of 12 m from the ball. If Tim's average speed is 4.2 m/s and Jan's average speed is 4.0 m/s, which child will reach the ball first? Show how you arrived at your answer. (See Sample Problem 1.1.)

Question 17

A sailboat heads north at 3 m/s for 1 hour and then tacks back to the southeast (at 45° to north) at 2 m/s for 45 minutes.
a. How far has the boat sailed?
b. How far is it from its starting location?