A small, foam ball known as "the world's first indoor ball!" a 4 inch foam ball
the foam of the ball
160 oz. About the weight of an average bowling ball.
A little foam ball.
Over 9,000
The weight of a ball ranges from 6 to 16lbs. The average adult male uses a ball weighing 14/16lbs and the female 10/14lbs
It is filled with air. A soccer ball is filled with foam. Air
depending on the run up his average ball travelling speed is about 86mph to a 117mph, which depends on the weight of the ball
it shall weigh 40 mm
Density is weight divided by volume. Measure the weight (with a scale), calculate the volume (which is easy to do if the foam is rectangular in shape - you might even want to cut out a rectangular piece, if your foam has an irregular shape), and divide the weight by the volume.
Foam Ball with sticks
1000 pounds