Rafed English
site.site_name : Rafed English

  • Did you know sound travels almost 5 times faster underwater than in air
  • Did you know the average speed of a skydiver is 200kph (124mph)
  • Did you know 1 nautical knot equates to 1.852 Kph (1.150 mph)
  • Did you know your tongue is the fastest healing part of your body
  • Did you know a dolphins top speed is 60kmh (37mph)
  • Did you know a sharks top speed is 70kmh (44mph)
  • Did you know sound travels 3 times faster through water than in air
  • Did you know the first train reached a top speed of only 8 kmh (5 mph)
  • Did you know a honeybee's top speed is 24kph (15mph)
  • Did you know a cheetahs top speed is 114kph (70mph)
  • Did you know bull's can run faster uphill than down
  • Did you know to crack a whip the tip must be travelling faster than the speed of sound
  • Did you know a car travelling at 80kph (50mph) uses half its fuel to overcome wind resistance
  • Did you know womens hearts beat faster than mens
  • Did you know greyhounds can reach speeds of up to 67kph (42mph)
  • Did you know fleas can accelerate 50 times faster than a space shuttle
  • Did you know sound travels 15 times faster through steel than air
  • Did you know a hippopotamus can run faster than a man
  • Did you know elephants can run up to 40kmh (25mph)
  • Did you know an ostriches can outrun a horse
  • Did you know squirrels can climb trees faster than they can run on the ground
  • Did you know the greyhound is the fastest dog and can reach speeds of up to 72kph (45mph)
  • Did you know the fastest fish in the sea is the swordfish and can reach up to speeds of 108kph (68mph, 59knots)
  • Did you know a whip makes a cracking sound because its tip moves faster than the speed of sound
  • Did you know sound travels 10 times faster through granite than air
  • Did you know a dragonfly can fly at 40kph (25mph)
  • Did you know flies can react to an object it sees and change direction in less than 30 milliseconds
  • Did you know the fastest insect is the Australian dragon fly (its top speed is 57 km/h (35mp/h))
  • Did you know warthogs can reach speeds of 48km/h (29mph)
  • Did you know a woodpecker can peck 20 times a second
  • Did you know fingernails grow faster than toenails
  • Did you know tachophobia is the fear of speed
  • Did you know If you could drive to the sun at a speed of 88.5 km/h (55 mp/h) it would take around 193 years
  • Did you know cheetahs can accelerate from 0 to 70 km/h (43mp/h) in 3 seconds