Projectule Motion 2o Flashcards
What is the relationship between velocity and air resistance?
The greater the velocity, the greater the air resistance or drag.
What effect does the frontal cross-sectional area have on air resistance?
The larger the frontal cross-sectional area, the larger the air resistance or drag.
What is one factor that affects air resistance and drag?
Streamlining.
What is another factor affecting air resistance and drag?
Smoothness of surface.
What is projectile motion?
The movement of a body through the air following a curved flight path under the force of gravity.
Define ‘projectile’.
A body launched into the air and subjected to weight and air resistance forces.
What forces act on a projectile during its motion?
Weight and air resistance.
True or False: A projectile moves in a straight line.
False
Fill in the blank: A projectile follows a _______ flight path under the force of gravity.
curved
What are the 4 key factors that influence distance?
- Speed of release
- Angle of release
- Height of release
- Aerodynamics (Bernoulli & Magnus)
These factors are crucial in determining how far an object will travel when projected.
What principle explains the effects of aerodynamics in distance?
- Bernoulli’s principle
- Magnus effect
These aerodynamic principles play a crucial role in how objects behave in flight.
Speed of release
The greater the force applied to the body/
projectile the greater the acceleration,
therefore, the further it will travel.
Angle of release
Optiamal angle is 45
What is positive release height?
When the release height is ABOVE the landing height, resulting in a lower optimum angle of release.
How does positive release height affect projectile flight time?
It increases flight time due to the height.
What is the optimum angle of release for javelin and shot put when the release height is positive?
Less than 45 degrees.
What happens when the release height is below the landing height?
The optimum angle of release is higher.
Give an example of a situation where negative release height is applicable.
A golf bunker shot, which needs a greater angle to avoid the obstacle.
Fill in the blank: If the release height is ABOVE the landing height, the optimum angle is _______.
lower.
Fill in the blank: If the release height is BELOW the landing height, the optimum angle is _______.
higher.
What is the flight path of a projectile unaffected by air resistance called?
Parabola
A parabola is a uniform curve, symmetrical about its highest point.
What factors affect the flight of a projectile?
Weight and air resistance
These factors influence the behavior and shape of the flight path.
The flight path of a projectile is more or less parabolic depending on what?
The dominant force
The dominant force can change the shape of the flight path from a perfect parabola.
