11. How much force would be needed to accelerate an object (mass = 2 kg) 10 m/s2? A. 1500 N 1 B. 15 N 6 C. 6.818 N D. 681.8 N

2. If a runner's center of mass velocity was 10 m/s at an angle of 48 degrees what was their step length? a. A. 6.69 m b. B. 1.52 m c. C. 2.81 m d. D. 10.14 m e. E. none of the above

3. A person jumps 33 cm into the air. Assuming that their takeoff height and landing height are the same how long were they in flight? a. A. 0.13s b. B. 0.26s c. C. 0.54s d. D. 0.49s e. E. cannot be determined from the information given

4. A looming object as it approaches appears to get bigger and move faster the closer that it is. A trigger of 0 .0.27 seconds prior to ground contact causes a lander to "retract their landing gear" to lessen impact forces during landing. a. A. Statement A is true and statement B is True b. B. Statement A is true and statement B is false c. C. Statement A is False and Statement B is true d. D. Statement A is false and statement B is false

5. What is the optimum angle of release (takeoff) to maximize range if the release (takeoff) height is greater than the contact (landing)? a. A. 45 degrees b.B. > 45 degrees c.C. < 45 degrees d. D. depends e.E. none of the above

6. A focal length of 35 mm to 80 mm specifies a camera lens that... a. A. Is capable of stopping b. B. Is sensitive in dim light c. C. Is capable of capturing a wide field of view d. D. Is capable of zooming in significantly to magnify image size e. E. None of the above

c

7. The video sampling rate is 60 pictures/s. If the jumper was in the air for 17 pictures how long was he going uup? a. A. 3.5 s b. B. 0.70 s c. C. 0.28 s d. D. 0.14 s e. E. None of the above

8. Video analysis is used to analyze a basketball player's jumping prior to beginning her training macrocycle. If her total time in the air was 0.4 s what was her jump height? a. A. 0.1962 m b. B. 0.49 m c. C. 0.981 m d. D. 1.962 m e. E. None of the above

9. As a therapist, you have working with a watermelon picker who must toss watermelons weighing approximately 2 kg. from the ground to a fellow employee up on an elevated truck bed. The melons travel up 22.5 m, forward 1.5 m, down 0.5 m. Assuming air resistance is negligible which fo the following statements from a a projectile motion perspective are true. I. Time up > Time Down II. 1. Vertical velocity at contact is greater in magnitude than the vertical velocity at release II2. Horizontal distance the melon travels on the way up is greater than the horizontal distance traveled on the way down I 3 . Horizontal velocity at release is the same as the horizontal velocity at contact a. II, III b. II, IV c. III, IV d. I, III, IV e. None of the above

1

1 10. Event Time RFS1 0 RTO1 0.2 LFS1 0.283 LTO1 0.5 RFS2 0.567 RTO2 0.784 LFS2 0.867 RTO2 1.084 RFS3 1.151

From my understanding this running gait. Can you provide an example of walking gait using numbers.

d

a