Bio mechanics

Question 1

Biomech

Answer 1

the field of sport science that applies the laws of mechanics and physics to human performances in order to gain a greater understanding of performance

Question 2

Linear motion

Answer 2

Movement in a straight line is referred to as rectilinear motion, where all parts of a body travel the same distance

Question 3

Angular motion

Answer 3

Also commonly referred to as rotation, occurs when a body mass moves along a circular path at the same angle, same direction and same time

Question 4

Mass V Weight

Answer 4

The term mass is used to describe the amount of matter an object is made of

Weight refers to the amount of force exerted on the body by gravity, The terms are often confused, weight is just a number

Question 5

Inertia

Answer 5

Is a term often used to describe the reluctance of a body to change it’s state of motion. The greater the mass of an object, the greater it’s inertia and greater force is needed to change it’s state of motion

Question 6

Force

Answer 6

Force is defined as a push or pull which can accelerate, decelerate and/or change direction of a body with mass. To change the state of a body force must be applied to it

Question 7

Friction

Answer 7

Friction will oppose motion. In sport there are times when it is beneficial to decrease friction between two surfaces or to increase friction

Question 8

Linear acceleration

Answer 8

Positive acceleration=speeding up
Zero acceleration=velocity does change over a period of time
Negative acceleration=slowing down

Question 9

Momentum

Answer 9

A measure of the amount of motion a object has and it’s resistance to changing it’s motion

Mass x Velocity

Question 10

Force summation

Answer 10

about putting all movements together using muscles to produce maximal force

Sequential summation of momentum resultso in maximal force

Question 11

impulse

Answer 11

impulse js the product of force and time (impulse=force time)

Question 12

Angular displacement

Answer 12

the remaining amount of degrees left
e.g

Question 13

What is the difference between speed and velocity?

Answer 13

Speed and velocity are often used interchangeably, but they are not the same.

Question 14

Define average speed.

Answer 14

Average speed refers to the distance covered divided by the time taken.

Question 15

What is the formula for average speed?

Answer 15

The formula is represented by: speed = distance / time or s = l / t.