Biomechanics

Question 1

Biomechanics definition

Answer 1

the study of the mechanics of human movement

Question 2

Role of Biomechanics

Answer 2

• analysis of human movement
• analysis of forces in physical activities
• determine how injuries occur/injury prevention and rehabilitation
• design and development of sporting equipment

Question 3

Force definition

Answer 3

any pushing or pulling activity that tends to alter the state of motion of a body

Question 4

External forces

Answer 4

• gravity
• air resistance
• water resistance

Question 5

Internal forces

Answer 5

-muscles and tendons

Question 6

Force equation

Answer 6

force = mass x acceleration

Question 7

Friction

Answer 7

opposes he motion of two surfaces that are in contact with each other

Question 8

Drag force

Answer 8

when an object moves through the air or water, causes by the collision of particles with the object

Question 9

Gravitational force

Answer 9

attraction between two objects

Question 10

Weight force

Answer 10

effect of gravitational force acting on an object

Question 11

Weight equation

Answer 11

weight = mass x gravity

Question 12

Inertia

Answer 12

tendency of a body to resist a change in its state of motion

Question 13

Momentum

Answer 13

measure of the amount of motion an object has and it resistance to changing that motion

Question 14

Momentum equation

Answer 14

momentum = mass x velocity

Question 15

Conservation of momentum

Answer 15

total momentum of the system before the collision is equal to the total momentum after the collision

Question 16

Summation of momentum

Answer 16

lager, slower moving body segments, transferred to the small, lighter moving body segments and then transferred to object to be released at a high velocity

Question 17

Angular motion

Answer 17

any movement where rotations occurs around an axis

Question 18

Angular velocity

Answer 18

the speed of the angular motion

Question 19

Newton’s 1st law of Angular Motion

Answer 19

the angular momentum of a body remains constant unless acted upon by an external torque

Question 20

Newton’s 2nd law of Angular Motion

Answer 20

a torque applied to an object will produce a change in angular motion in the direction of the applied torque that is directly proportional to the moment of inertia of the object

Question 21

Newton’s 3rd law of Angular Motion

Answer 21

for every torque, there is an equal and opposite torque

Question 22

Moment of Inertia

Answer 22

higher moment of inertia means you spin slower

Question 23

Torque

Answer 23

turning effect caused by applying an eccentric force

Question 24

Moment of Inertia equation

Answer 24

mass x radius ^2

Question 25

Torque equation

Answer 25

force x lever arm of force

Question 26

Impulse

Answer 26

equal to the change in momentum of an object

greater and/or longer the force is applied the greater the impulse

Question 27

Impulse equation

Answer 27

force x time

Question 28

Newton’s 1st law of Motion

Answer 28

a body will remain in motion or at rest unless acted upon by an external force

Question 29

Newton’s 2nd law of Motion

Answer 29

a force applied to an object will produce a change in motion in the direction of the applied fore that is directly proportional to the size of the force

Question 30

Newton’s 3rd Law of Motion

Answer 30

for every action there is an equal and opposite reaction