1. The sweet spot is the same on every tennis racquet.
a. True
b. False
2. Approximately what percentage of the energy is lost when the tennis ball hits the strings?
a. 3%
b. 15%
c. 30%
d. 50%
3. What spin in tennis, will have the ball jump forward and out?
a. Topspin
b. Slice
c. Backspin
d. Flat shot
4. What swimming stroke has the least drag?
b. Back stroke
c. Freestyle
d. Butterfly
5. which of the following methods are used by swimmers to improve their times?
a. Shave
d. Sleep