Diameter7.6 hundredths m
2.52AirPod lengths
1.34Rubik's cubes
7.1 hundredthsHurdle heights
3 inches, official NHL specification
Photo from Wikimedia Commons
Ice Hockey Puck
The frozen rubber disc that moves at up to 170 km/h/Sports
An official NHL hockey puck is a vulcanized rubber disc, 7.62 cm in diameter, 2.54 cm thick, and weighing between 156 and 170 grams. Pucks are frozen before games to reduce bouncing on the ice. During play, pucks can reach speeds of 170+ km/h on slap shots; Zdeno Chara's 2012 All-Star Skills Competition shot clocked 175.1 km/h. Roughly 40-50 pucks are used per NHL game, as they frequently leave the rink or become too warm from friction to slide properly.
Measurements
Thickness2.5 hundredths m
169 billionthsBig Island lengths
2.2 hundredthsShoelace lengths
1.2 thousandthsSemi truck lengths
1 inch
Mass1.6 tenths kg
13.6 millionthsEmpty dump trucks
2.3 tenthsHardcover books
52.6 millionthsTesla Cybertrucks
Between 156-170 grams
Face area4.6 thousandths m2
4,560Pinheads
2.8 hundredthsPizza boxes
7.6Postage stamps
Circular flat face
Record slap shot speed48.6 m/s
152 millionGlacial retreat
40.5 billionFingernail growths
3.12Charging grizzly bears
175.1 km/h by Zdeno Chara