Week 1 Lecture 1

Question 1

Mechanics

Answer 1

Is a branch of physics that is concerned with the motion and deformation of bodies that are acted on by mechanical disturbances called forces

Question 2

Biomechanics

Answer 2

Study of the structure and function of biological systems by means of methods of mechanics

Question 3

Kinematics

Answer 3

Describing what’s going on in the motion. The position of the person

Question 4

Kinetics

Answer 4

Can’t see what’s going on, it ha san effect on the motion

Question 5

Application of biomechanics to sport science

Answer 5

Technique improvement/ development
Injury prevention
Equipment development

Question 6

Length

Answer 6

Metres (m)
Position (vector)

Question 7

Mass

Answer 7

Kilogram (kg), scalar

Question 8

Time

Answer 8

Seconds (s)
Scalar

Question 9

Velocity

Answer 9

M/s
Vector

Question 10

Acceleration

Answer 10

M/s2
Vector

Question 11

force (newtons)

Answer 11

Kg m/s2.
Vector

Question 12

Moment

Answer 12

N m
Vector

Question 13

Work/ Energy

Answer 13

N m (joule (j)
Scalar

Question 14

Power

Answer 14

J/s Watt (w)
Scalar

Question 15

Scalars

Answer 15

Are fully defined by their magnitude (number)
Eg - inject has a mass of 2kg

Question 16

Vectors

Answer 16

Are fulled defined by magnitude and direction
Eg a force of 2 N PULLS AN OBJECT IN A SPECIFIC DIRECTION
Are reperesented as arrows= they show direction and the length represents the direction and magnitude of the vector respectively
Can only add and subtract vectors as a like for like

Question 17

Vector components

Answer 17

Every vecto can be represented as a sum of 3 vectors which are alleged with the axes of the Cartesian coordinate system and whose magnitudes are equal to the projections of vector of interests on the corresponding axis

Question 18

Magnitude of the vector

Answer 18

A= square root of a2x+a2z

Question 19

AREA

Answer 19

2D
Length x length
M2

Question 20

Volume

Answer 20

M3

Question 21

Density

Answer 21

N/m2