Projectile Motion
What is the curved shape of the flight path of a projectile called?
Parabola
What is the definition of centre of gravity?
What is the definition of centre of gravity?
the centre of balance of an object
A body will remain in its state of rest or uniform motion until an outside force changes its state
What is Newtons First Law?
the amount of substance of a object
What is mass?
What is a force?
What is a force?
push or a pull
What is the optimum angles of release for distance?
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?
Why does the COG rise above the belly button when a person raises their arms?
because some of the persons mass rises
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?
speeding up
What is acceleration?
What is momentum?
What is momentum?
mass x velocity?
What is an object that is subject only to the force of gravity?
What is an object that is subject only to the force of gravity?
projectile
Why are you more stable if you widen your base of support?
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
For every action there is an equal and opposite reaction.
What is Newtons 3rd Law?
What is Force Summation?
What is Force Summation?
Adding the force of one body (or part) to the next so that momentum builds
What is the path of a projectile through the air called?
What is the path of a projectile through the air called?
trajectory
What is another way of becoming more stable?
What is another way of becoming more stable?
lower base of support
What is a force that opposes movement?
What is a force that opposes movement?
friction
What 3 things affect the trajectory of a projectile?
What 3 things affect the trajectory of a projectile?
height of release, speed of release, angle of release
Who has a higher centre of gravity a)a toddler on a skateboard or b) a toddler on stilts
Who has a higher centre of gravity a)a toddler on a skateboard or b) a toddler on stilts
A toddler on stilts
Why do objects with greater mass have greater inertia?
Why do objects with greater mass have greater inertia?
because more matter has to be moved
Name 2 examples from basketball of 'good' friction:
Name 2 examples from basketball of 'good' friction:
basketball shoes, basketball grip.