What is the curved shape of the flight path of a projectile called?
Parabola
the centre of balance of an object
centre of gravity
the amount of substance of a object
What is mass?
What is the optimum angles of release for distance?
45 degrees
Why does the COG rise above the belly button when a person raises their arms?
The mass is redistributed
What is an object that is subject only to the force of gravity and air resistance?
projectile
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
adding the force of one body to the next so that momentum builds
Summation of momentum
What is the path of a projectile through the air called?
trajectory
What is another way of becoming more stable
lower base of support
straight line movement, a change in position of an object
What is linear motion?
What is a force that opposes movement when two surfaces meet
friction
What 3 things affect the trajectory of a projectile?
height of release, speed of release, angle of release
Who has a higher center of gravity a) a midget on a skateboard or b) a midget on stilts
b) A midget on stilts
why is it harder to move a sumo wrestler compared to a ballerina?
because more matter has to be moved therefore greater inertia
Ted