In tennis: A property of a ball that rotates forwards as it is moving is called a ...
In ball sports, topspin is a property of a ball that rotates forwards as it is moving. Topspin on a ball propelled through the air imparts a downward force that causes the ball to drop, due to its interaction with the air (see Magnus effect).
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the United States
The French Open tennis tournament is named after aviator Roland-Garros. What did he do?
he invented a monoplane
he flew from Paris to London
he flew across the Mediterranean Sea
he became the first fighter ace of WWI
Which tennis player won the most titles in her career?