Force

Question 1

Define ‘Force’.

Answer 1

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

Question 2

what are the four types of force?

Answer 2

Sub max
Maximal
Isometric
isotonic

Question 3

What external forces can be applied to the body?

Answer 3

gravity, friction, air resistance and water resistance

Question 4

What generates internal force?

Answer 4

generated by muscles and tendons on the skeletal system

Question 5

What is ‘Maximal Force’ and give a sporting example.

Answer 5

Perfect timing, maximal muscle contraction and excellent technique
eg. tennis serve

Question 6

What is ‘Sub Maximal Force’ and give a sporting example.

Answer 6

skills that require a limited motor units to be successful eg. putting in golf

Question 7

What is ‘Isometric force’ and give a sporting example

Answer 7

muscle length stays the same but muscle is firing eg. gripping a bat

Question 8

What is ‘Isotonic force’ and give a sporting example

Answer 8

force that changes an object’s movement eg. kicking a ball

Question 9

Define ‘Force Summation’

Answer 9

A combination of muscles to work at the same time to generate force

Question 10

What is simultaneous force summation? and give an example

Answer 10

an explosive action of all the body parts at the same time eg. high jumping at the point of the jump and ‘fosbury flop’

Question 11

What is sequential force summation? and give an example

Answer 11

body parts that are are moved in a sequence that generate great force eg. fast bowling in cricket

Question 12

Impulse is the change of momentum that occurs when a force is applied to an object, what is the formula for Impulse?

Answer 12

Impulse = Force x Time

I = Ft

Question 13

timing is requires a 4 step technique, what are they?

Answer 13

uses as many body parts as possible
use the largest muscle groups
in a sequence accelerate each body part from big to small
stabilise each body part so that the next part accelerates

Question 14

How accurate you are is determined by three important factors. What are these?

Answer 14

How the movement is performed
The direction the force is applied
The amount of force applied

Question 15

What is ‘Flattening the arc’? Give at least three sporting examples.

Answer 15

flattening the arc increases the ‘hit-zone’ thus increasing distance, power and accuracy
Eg. Golf, Cricket, baseball

Question 16

There are seven other factors that can influence accuracy?

Answer 16

Gravity
Air Resistance
Follow through
Flattening the arc
Correct technique
timing
sub-max effort

Question 17

What is ‘Flattening the arc’? Give at least three sporting examples

Answer 17

flattening the arc increases the ‘hit-zone’ thus increasing distance, power and accuracy