projectile motion Flashcards
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Trajectory
Is the path a projectile follows in its passage through the air
Instant of release
is the instant a body becomes a projectile eg: athlete releasing a javelin
Components of a projectile
every projectile has a horizontal and vertical component to its trajectory
Vertical component
the force of gravity results in constant vertical acceleration (dropping object) or deceleration (object moving upwards)
Velocity of release
is the result of vertical of vertical and horizontal velocities
Vertical velocity
determines the height of the apex of the trajectory, which affects the time an object stays in the air for
Horizontal velocity
This stays constant throughout the flight of the projectile
3 factors affecting projectile motion
velocity, angle and height of release
Angle or release
the angle that determines the shape of the trajectory
45 degree AOR
Will result in the greatest possible distance an object will travel
Greater than 45 degree AOR
Results in shorter horizontal distance, greater heights and longer flight times
Less than 45 degree AOR
Results in shorter horizontal distance, lower flight times and shorter flight times
What AOR do you want for a soccer bottom corner
less than 45 degree AOR
AOR for ball free throw
greater than 45 degree AOR
Long jump and AOR
A long jumper is not physically strong enough to retain sufficient horizontal velocity and at the same time achieve a 45 degree take off angle, therefore use a take off angle of 20 degrees
