Biomechanics - Forces

Question 1

What is a kinematic?

Answer 1

is the description of motion (acceleration, distance, speed)

Question 2

What is kinetics?

Answer 2

is the study of forces that cause motion

Question 3

Force?

Answer 3

A force is a push or pull
Affects:
- shape of an object
- move the object (speed up, slow down, change direction)

Question 4

What is the formula for force?

Answer 4

force = mass x acceleration F=Ma (N)

Question 5

Mass?

Answer 5

Is a measure of the amount of matter an object is made up of (KG)

Question 6

Acceleration?

Answer 6

Refers to change in velocity- time taken to change position

Question 7

What are the types of forces?

Answer 7

• Internal
• External

Question 8

Internal force?

Answer 8

Force generated by muscles (biceps, quads)

Question 9

What are the four types of external forces?

Answer 9

• Frictional force
• Air/ water resistance
• Weight (not mass)
• Gravitational force

Question 10

What is frictional force?

Answer 10

friction occurs when two surfaces come into contact with each other
- some sports would require increase friction, some reduced

Question 11

What is air/water resistance?

Answer 11

movement though water or air creating drag

Question 12

What is weight (not mass)?

Answer 12

the force that is exerted on the body by gravity (mass x gravity)

Question 13

What is gravitational force?

Answer 13

causes objects to fall back towards the earth