In this picture, you see a girl setting up her serve by throwing the ball in to the air. This picture shows the real life application of free fall. When the ball leaves her hand, it gradually decreases from the starting velocity which she threw it by ten meters per second until it reaches V=0 m/s or the highest point of its path. It retains a constant acceleration since gravity is the only force acting upon the object. Thus, when it reaches its highest point, the tennis player then hits the ball into the opposing court. This picture shows a tennis ball that has reached its highest point. If the tennis players wishes to calculate how high the ball will travel, she could use the distance formula, d=.5gt^2. If the tennis player allows the ball to fall naturally, it would increase 10 miles per second until it reaches the ground, following the same path which it was thrown.
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