When playing tennis, the arm is used as a 3rd class lever. Also, you can research how the human body reacts to such strenuous sporting activity.
It's a subjective measurement made by the manufacturer. There is no scientific basis to the figures.
Tennis involves principles of physics, such as trajectory, spin, and impact forces. Players utilize biomechanics to generate power and efficiency in their movements. Tennis equipment is designed using materials and technology that incorporate scientific advancements to enhance player performance.
Trampoline Tennis Table-tennis
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Tennis
The typical sport that uses the term, "deuce", is Tennis or Table Tennis.
lawn tennis is a tennis
Rodney George Laver has written: 'Tennis for the bloody fun of it' -- subject(s): Tennis '228 tennis tips' -- subject(s): Tennis 'The education of a tennis player' -- subject(s): Tennis 'How to play championship tennis' -- subject(s): Tennis 'Tennis digest' -- subject(s): Tennis
Tennis in German is Tennis.
Grass tennis is tennis which is played on grass. A famous grass tennis arena is the Wimbledon.
une raquette de tennis (by the way, it's racquet in English)
"Tennis" in English is tennis in Italian.