Lab 2 Key copy - Lab time: ONLINE KNH 381: LAB TWO _ ame:...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Lab time: ONLINE KNH 381: LAB TWO _Name: KEY for summer 2010 PHS 381 - Biodynamics RUNNING KINEMATICS/ PROJECTILES, NEWTON'S 2ND LAW, Learning objectives (running kinematics): To increase understanding of displacement, speed, velocity, and acceleration and how they are measured. (background info and equations for this part can be found in chapter 2 of the text book) Problems (running kinematics): What is the maximum horizontal velocity that a runner achieves during a sprint race? Learning objective (N’s 2 nd law, projectiles): To increase understanding of projectiles, Newton's 2nd Law of Motion, and impulse and momentum. Equipment: Force plate (in this case you will be given data from an actual jump on a force plate). RUNNING KINEMATICS Sample data for Activity (stride length and rate): The following stride rate and stride length data were measured between the 60 and 100 m marks of the men's and women's 100 m dash finals in the 1997 World Championships: MEN HEIGHT (m) MASS (kg) STEP LENGTH (m) STEP RATE (step/s) Maurice Greene 1.75 75 2.32 5.00 Dovovan Bailey 1.83 82 2.42 4.64 Tim Montgomery 1.78 69 2.25 4.81 WOMEN HEIGHT (m) MASS (kg) STEP LENGTH (m) STEP RATE (step/s) Marion Jones 1.78 61 2.23 4.68 Zhanna Pintusevich-Block 1.64 62 2.19 4.68 Christine Arron 1.77 64 2.40 4.35
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
PHS 381 – Biodynamics Lab Name _________________________________ Sample data for Activity (100 m dash): The men's and women’s 100 m dash finals at the 1997 World Championships: MEN MAURICE GREENE DONOVAN BAILEY TIM MONTGOMERY position time (sec) time (sec) time (sec) 0 (start) 0 0 0 10 m 1.84 1.92 1.87 20 m 2.88 2.95 2.90 30 m 3.80 3.86 3.83 40 m 4.68 4.73 4.71 50 m 5.55 5.58 5.57 60 m 6.40 6.43 6.43 70 m 7.25 7.28 7.29 80 m 8.11 8.14 8.16 90 m 8.98 9.01 9.04 100 m (finish) 9.86 9.91 9.94 WOMEN MARION JONES ZHANNA PINTUSEVICH- BLOCK CHRISTINE ARRON position time (sec) time (sec) time (sec) 0 (start) 0 0 0 10 m 1.98 1.99 2.06 20 m 3.09 3.11 3.21 30 m 4.11 4.12 4.23 40 m 5.08 5.09 5.21 50 m 6.03 6.03 6.17 60 m 6.97 6.97 7.12 70 m 7.92 7.91 8.08 80 m 8.87 8.87 9.05 90 m 9.84 9.85 10.04 100 m (finish) 10.83 10.85 11.05 Distance (m) Time (sec) Velocity (m/s) 0m – 10m 1.98 sec 10/1.98 = 5.05 m/s 10m – 20m 1.11 sec 10/1.11 = 9.00 m/s 20m – 30m 1.02 sec 10/1.02 = 9.80 m/s 30m – 40m .97 sec 10/.97 = 10.30 m/s 40m – 50m .95 sec 10/.95 = 10.53 m/s 50m – 60m .94 sec 10/.94 = 10.64 m/s 60m – 70 m .95 sec 10/.95 = 10.53 m/s 70m – 80m .95 sec 10/.95 = 10.53 m/s 80m – 90 m .97 sec 10/.97 = 10.31 m/s 90m – 100m .99 sec 10/.99 = 10.10 m/s page 2
Background image of page 2
PHS 381 – Biodynamics Lab Name _________________________________ Questions: The following 3 questions refer to the 100 m dash for the elite sprinter. (choose one) Which elite sprinter did you choose to analyze and what was his or her average horizontal velocity ( v ) for the whole 100 m? (1pt) MARION JONES a = 0 since horizontal velocity, velocity is constant Xf = Xi + V t Δ X = V t Δ 100m = V (10.83 sec) V = 9.23 m/s What is your best
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/10/2011 for the course KNH 381LAB taught by Professor Staff during the Summer '11 term at Miami University.

Page1 / 9

Lab 2 Key copy - Lab time: ONLINE KNH 381: LAB TWO _ ame:...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online