Overall length2.6 m
1.4 tenthsBowling lanes
13.7No. 2 pencils
Men's javelin; 2.6-2.7 m regulation range
Photo from Wikimedia Commons
Olympic Javelin
A spear optimized for throwing really, really far/Everyday Objects
The men's Olympic javelin is 2.6 to 2.7 meters long and must weigh at least 800 grams. It is one of the oldest field events, dating back to ancient Greece, though the modern javelin was redesigned in 1986 after throws were getting dangerously close to clearing the stadium. The center of gravity was moved forward to make it nose-dive sooner, which is a polite way of saying they nerfed it for safety.
Measurements
Minimum mass8 tenths kg
121 trillionthsHoover Dam masses
320US pennies
26.7 septillionWater molecule weights
Men's specification; women's is 0.6 kg
World record throw distance98.5 m
492Dinner forks
54.7Bookcase heights
Jan Železný, 1996; the current men's world record
Release speed (elite)30 m/s
1.2 tenthsCommercial jets
2Galloping horses
3.2 hundredthsSound in helium
~108 km/h at release for top throwers
Grip cord diameter2.5 hundredths m
1.7 thousandthsYacht lengths
1.4 hundredthsStep ladder heights
The cord wrapping at the center of gravity