Projectile Motion
Balance and Stability
Newtons Laws
Terminology
Random
100

What is the curved shape of the flight path of a projectile called?

Parabola

100

the centre of balance of an object

centre of gravity

100
A body will remain in its stae of rest or uniform motion until an outside force changes its state
What is Newtons First Law?
100

the amount of substance of a object

What is mass?

100
push or a pull
What is a force?
200

What is the optimum angles of release for distance?

45 degrees

200

Why does the COG rise above the belly button when a person raises their arms?

The mass is redistributed 

200
The greater the force, the greater the acceleration. The smaller the mass, the greater the acceleration. The change in motion takes place in the direction the force was applied.
What is Newtons 2nd Law
200
speeding up
What is acceleration?
200
mass x velocity?
What is momentum?
300

What is an object that is subject only to the force of gravity and air resistance?

projectile

300

Why are you more stable if you widen your base of support?

Because the COG has a greater distance to travel before it can lie outside of the base of support

300
Fro every action there is an equal and opposite reaction.
What is Newtons 3rd Law?
300
The speed of an object and its direction
What is velocity?
300

adding the force of one body to the next so that momentum builds

Summation of momentum

400

What is the path of a projectile through the air called?

trajectory

400

What is another way of becoming more stable

lower base of support

400
The difficulty to get a stationary object moving
What is inertia?
400

straight line movement, a change in position of an object

What is linear motion?

400

What is a force that opposes movement when two surfaces meet

friction

500

What 3 things affect the trajectory of a projectile?

height of release, speed of release, angle of release

500

Who has a higher center of gravity a) a midget on a skateboard or b) a midget on stilts

b) A midget on stilts

500

why is it harder to move a sumo wrestler compared to a ballerina?

because more matter has to be moved therefore greater inertia

500
a force that prevents movement away from the earth
What is gravity?
500
What is the name of Miss Grays dog?

Ted

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