It's about as heavy as a Deck of Cards
(ISO 216 B8 size, a.k.a. "poker size" 63 x 88 mm, 52-card deck)
A deck of 52 ISO 216 B8-size playing cards weighs 0.0000000000940 megatonnes. Utilizing nearly 3,700 decks, the record-holding largest card tower was built in early 2010, stood over 3.5 m (11 ft), and weighed over 0.000000230 megatonnes.
It's about one-and-two-fifths times as heavy as a Battery (C)
In other words, the weight of a Battery (C) is 0.710 times 0.0000000000940 megatonnes.(Alkaline)
A "C" size battery weighs 0.0000000000650 megatonnes. C batteries are typically used in medium-drain devices such as musical instruments.
It's about seven-tenths as heavy as a Battery (D)
In other words, 0.0000000000940 megatonnes is 0.6960 times the weight of a Battery (D), and the weight of a Battery (D) is 1.440 times that amount.(Alkaline)
A "D" size battery weighs 0.0000000001350 megatonnes. The D size battery is the oldest of the modern battery sizes, first invented by the National Carbon Company in 1898.
It's about two-thirds as heavy as a Baseball
In other words, 0.0000000000940 megatonnes is 0.646976082587430 times the weight of a Baseball, and the weight of a Baseball is 1.54565219165560 times that amount.(MLB rules)
Per Major League Baseball rules, a baseball must weigh between 0.0000000001417476156250 megatonnes and 0.000000000148834996406250 megatonnes. A major league pitcher can throw a baseball at up to 150 kph (91 mph) (with a fastball pitch), with record-setting pitches as fast as 171 kph (106 mph).
It's about one-and-three-fifths times as heavy as a Tennis Ball
In other words, 0.0000000000940 megatonnes is 1.630 times the weight of a Tennis Ball, and the weight of a Tennis Ball is 0.6130 times that amount.(ITF Standard; for Type 2 ball)
Per International Tennis Federation standard, regulation tennis balls must weigh about 0.00000000005770 megatonnes. Competition balls are also tested for bounce height, with the standards requiring that a ball dropped from 254 cm must bounce back to a height of 135 cm to 147 cm.
It's about three-fifths as heavy as a Billiard Ball
In other words, 0.0000000000940 megatonnes is 0.576652595349660 times the weight of a Billiard Ball, and the weight of a Billiard Ball is 1.73414636136970 times that amount.(American-style, WPA specifications)
Per the World Pool-Billiard Association, a billiard ball weight must weigh between 0.00000000015592237718750 megatonnes and 0.000000000170097138750 megatonnes. According to legend, the difficulty in obtaining elephant ivory for the manufacture of billiard balls in the 19th century inspired the search for a replacement material, which led to the development of the first industrial plastic.
It's about three-fifths as heavy as a Puck (Hockey)
In other words, 0.0000000000940 megatonnes is 0.576652595349660 times the weight of a Puck (Hockey), and the weight of a Puck (Hockey) is 1.73414636136970 times that amount.(Ice hockey)
A standard ice hockey puck weighs between 0.00000000015592237718750 megatonnes and 0.000000000170097138750 megatonnes. Hockey pucks can be shot or passed at speeds of up to 160 kph (99 mph) during games.