What is the mass of a standard tennis ball?

• A. 60 g
• B. 57.0 g
• C. 50 g
• D. 55 g

Answer: (B)

The key point is that standard tennis balls are manufactured to a specific mass range to ensure consistent play. Officially, tennis balls are within the mid-50s of grams, with a typical target around 57 grams and an allowed range roughly from about 56.0 to 59.4 g. Among the given options, 57.0 g best matches that standard mass and sits squarely inside the allowable range. The heavier option (60 g) would exceed the upper limit, while the lighter options (50 g and 55 g) fall below the minimum. So 57.0 g is the best representation of a standard tennis ball’s mass.