Biomechanics Q's

Week 1

1) Define the term biomechanics Bio refers to science and mechanics refers to the science of motion. It is the study of human motion.

2) Outline the basic human movements, and provide an example of the deadlift The basic human movements are 1) Push 2) Pull 3) Bend 4) Twist 5) Squat 6) Lung. An example for the deadlift would be Squat → Pull → Squat

3) What is the different between kinematics and kinetics? Kinematics refers to the description of motion without taking into account force, the what, so space and time. Kinetics refers to the causes of motion, the why, so force, space and time.

4) Define the 3 parameters of motion The 3 parameters of motion are the basic cohorts which make up movement. They are made up of 1) Displacement (s), which is the scalar equilivent of distance 2) Velocity (v), which measures the change of displacement over time 3) Acceleration (a), which measures the change in velocity over time. For example, a ball is thrown up 4m from ground level. What is the displacement and distance at peak height upon landing assuming it does not bounce? Peak height is 4m, 8m is total distance. For example, after 3s of a race a runner had travelled 15m. After 7s, distance was 60m. What was the average velocity during this period? A) 60 – 15 = 45m/4 = 11.25m/s

5) Describe what the angular equilivent of motion are The angular equilivent of motion refer to the movement that occurs around a joint. So with this you have 1) Angular Displacement (θ) 2) Angular velocity (ω) which is the change in displacement around the angle over time Radian/s 3) Angular Acceleration (α), which measures the change in angular velocity over time Radians/s2. For example a soccer player changes the angular velocity at the knee from 10rad/s to 15/s over 0.04 seconds. Find angular acceleration. 15 – 10 = 5/0.04 = 125rad/s2

6) Outline the 3 uniform acceleration equations The 3 equations of uniform acceleration are used to determine final velocity by taking into account...