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Old 08-01-2013, 11:33 AM   #18
Ash_Smith
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From the LTA coach education resource...

Ball Characteristic: Height

• Path:
A more level path will keep the ball on the same height. A low to high path will send the ball higher. A high to low path will send the ball lower.
• Angle:
Opening the racket face angle will send the ball higher. Closing it more will send the ball lower.
• Speed:
Increasing the racket speed can also increase the height of a shot if the racket face and path are angled 45 degrees or above. Decreasing the speed lowers the height of the ball.

Characteristic: Topspin

The amount of topspin can be increased or decreased by changing:
• The racket path
(a more upward path will increase the spin)
• The racket speed at impact
(more racket speed, will increase the amount of topspin)

(Language is simplified (as tennis coaches are a bit simple ) but is based on research evidence from Cambridge University Cavendish Laboratory and the Institute of Physics)
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