If I raise my hands, what happens to my centre of gravity? and how does it affect your stability?
It rises and decreases your stability.
100
Define Balance.
The ability to control equilibrium.
100
What is a lever?
A mechanism that helps you apply force.
100
Define Equilibrium?
Equilibrium is when an object has no unbalanced forces or torque acting on it.
100
Which is heavier, a ton of bricks or a ton of feathers?
They're both 1 ton.
200
If I bend my knees and crouch low, what happens to my centre of gravity? and how does it affect your stability?
It lowers your c.o.g and therefore makes you more stable.
200
Define stability.
The ability of a body to resist a change in its current state of equilibrium.
200
What are the three components in a lever?
Axis, Resistance and Force
200
What are the two types of Equilibrium?
Static and Dynamic Equilibrium
200
Adam's mother had three children. The first child was named April. The second child was named May. What was the third child's name?
Adam.
300
Can the centre of gravity be outside the body? Use example to demonstrate.
Yes, Using a chest pass.
300
Gymnasts need to have good balancing skills but they also have to have low stability. Explain.
Gymnasts need to be balanced in order to hold poses such as the V sit and handstand but need to have low stability to go from one position to the next quickly.
300
How do you find the mechanical advantage of a lever?
Force Arm Divided by the Resistance Arm
300
What are 2 examples of static and dynamic equilibrium?
Static: V-Sit gymnastics and Handstand in Diving
Dynamic: Jogging and Weaving through cones while dribbling.
300
Name the 7 colours in the rainbow?
Red, Orange, Yellow, Green, Blue, Indigo, Violet
400
What is the centre of gravity?
is the point around which the body’s weight is balanced.
400
What are the four factors that affect stability?
Body Mass
Position of Centre of Gravity
Base of Support
Friction
400
What is an example of a second class lever in the human body? and list the componets in relation to the example.
A person on the tippy toes
Axis - is the base of your toes
Force- the muscles in your calf/leg
Resistance - body weight
400
Define force couple? Give an example
A pair of equal and opposite forces that act on a object.
A person sitting on a doughnut in the water. If they use a force couple, they will just rotate it in a circle.
400
What letter follows after these, O, T, T, F, F, S, S, E, __?
N for Nine
500
where would i find the centre of gravity in a baseball bat?
Towards the greater mass - closer to the fat part of the bat and not the handle.
500
What a four items that can help you gain more friction? and what do they all do in releation to stability?
Golf Gloves, Footy Boots, Atheletic Running Shoes (with Spikes), Soccer Boots
THey all help increase friction between your foot and the floor which in turn increases your stability.
500
I am hitting a cricket ball with my cricket bat.
List the lever I am using and the components in relation to hitting a cricket ball.
Third Class Lever.
Axis - Shoulder Joint
Force - Is the muscles in the arm
Resistance - The cricket bat
500
What is the name of the test that we did to test our static equilibrium?
Stork Balance Test
500
When Moses made his way onto the ark, how many of each animal did he take with him?