Introduction to Kinesiology

Question 1

Kinematics

Answer 1

Study of movement related to displacement, velocity & acceleration

Question 2

Velocity

Answer 2

Change in distance/change in time

Question 3

Acceleration

Answer 3

Change in velocity/change in time

Question 4

Kinetics

Answer 4

Movements in terms of force

Question 5

Impulse and Momentum

Answer 5

Forces applied over a period of time

Question 6

Work and Energy

Answer 6

Forces applied over distance

Question 7

Force

Answer 7

Mass x acceleration

Question 8

Vector

Answer 8

Forces that act on a lever

Question 9

Vector Characteristics

Answer 9

Magnitude
Direction
Point of application
Line of application

Question 10

Force Types

Answer 10

Gravity
Shear
Tensile
Compressive

Question 11

Gravity

Answer 11

Always vertically down

Mass x gravital acceleration

Question 12

Shear

Answer 12

Coplanar, in opposite direction

blister

Question 13

Tensile

Answer 13

Colinear, in opposite direction

ligament strain

Question 14

Compressive

Answer 14

Colinear, in similar directions push together

meniscus

Question 15

Newton’s First Law

Answer 15

Inertia - Equilibrium

Body at rest will stay at rest

Question 16

Newton’s Second Law

Answer 16

Acceleration
Particle subjected to resultant force will accelerate in direction of force and magnitude of acceleration will be proportional to force of magnitude

Question 17

Newton’s Third Law

Answer 17

Action/Reaction

For every action, there is an equal and opposite reaction

Question 18

Moment (Torque)

Answer 18

Application of force at a distance from pivot point that cause rotation around a stationary point
Force x Distance

Question 19

Levers

Answer 19

Increase or decrease mechanical advantage

Question 20

Mechanical Advantage

Answer 20

Force arm divided resistance arm

Question 21

First Class Lever

Answer 21

FAR

Seesaw

Question 22

Second Class Lever

Answer 22

ARF

Wheelbarrow

Question 23

Third Class Lever

Answer 23

AFR

Tweezers

Question 24

Pulley

Answer 24

Improve line of pull or mechanical advantage

Could be fixed or movable

Question 25

Fixed Pulley

Answer 25

MA=1

Pulley wheel only rotates

Question 26

Movable Pulley

Answer 26

MA=2
Pulley rotates and translated
1 pulley = 1/2 force
2 pulleys = 1/4 force

Question 27

Cams

Answer 27

Non-uniform ellipses used to increase MA

Allows for variable resistance to match the length-tension relationship