Trajectory
Trajectory is the flight path of the golf ball — its height and shape from tee shot to landing.
Trajectory describes the ball's complete flight curve: how steeply it lifts off, how high it climbs and how it comes back down. The term is closely related to ball flights but refers above all to the height profile, less to the sideways curve. Three factors determine the trajectory: the Loft of the club, the clubhead speed and the type of ball contact. High trajectory means steep launch, soft landing and little roll. Flat trajectory means more run after landing but less carry through the air.
On the course you choose the trajectory according to the situation. An example: the wind is coming towards you and the flag stands behind a bunker. Instead of the full iron you play a Punch: ball further back in the stance, hands ahead of the ball, short follow-through. The ball flies flat underneath the Wind and rolls onto the green. Conversely, over a tree or to a back flag you need a high trajectory that lands almost vertically and stays where it lands. Moving the ball in the stance is the simplest height control here.
A typical mistake is uncontrolled Ballooning: the ball climbs too high, loses distance and is shifted arbitrarily by the wind. This often comes from too much loft at the moment of impact, for example when the hands stay behind the ball. Anyone who knows their standard trajectory can deliberately play higher or lower instead of leaving it to chance how the ball lifts off. A launch monitor, or even just attentive observation on the range, shows you your normal ball flight.
FAQ
How can I deliberately play my ball flight flatter?
The simplest height control is ball position: place the ball further back in the stance, bring the hands slightly ahead of the ball and swing shorter. That produces a punch that flies flat beneath the wind and rolls after landing. This pays off especially into a headwind or when there is room to roll under the flag.
Why does my ball climb too high and lose distance?
That is called ballooning: the ball shoots up steeply, hangs in the air and is shifted by the wind. The most common cause is too much loft at the moment of impact, for example when your hands stay behind the ball at contact or you want to "help the ball up". Also check whether your shaft or the loft matches your swing speed.
When do I need a high trajectory instead of a flat one?
When the ball should stop quickly or you have to clear an obstacle. If the ball flies high and lands almost vertically, it hardly rolls — ideal for a back flag behind a bunker or when playing over a tree. With plenty of roll, on the other hand, you play flat, for example on firm fairways downwind. Both work with the same club via stance and ball position.