Answer:

Tennis ball:

Tennis balls are yellow colored spherical balls, with a diameter between 2.5 and 2.625 inches. They weigh between 2 and 21/16 oz. Pressurized rubber is used to make semi spherical half shells. They are then joined with compressed air between them

Tennis racket:

Rackets can be made of many alloys or wood. There are no restrictions on the size or materials used in making a racket. It has an oval head and a gradually widening throat that connects the narrow handle with the head of the racket..