smooth track and NO grade crossings.
A good suspension helps, especially on curves
really fast
The track is very smooth and precisely positioned. The train is streamlined. The engine is powerful and it is good for the earth!
the speed of light
Very fast.
Temperature has a big effect on how fast air molecules travel. Air molecules move faster in hot weather and they move slower in cold weather.
Modern day bullet trains in japan reach up to speeds at 333km per hour. japan is currently making another bullet train which goes 500km per hour. This isn't just any train, it levitates on air. There are big magnets on the sides of the train and track which allows it to levitate. Relative to a plane, when it reaches around 120km per hour, it takes of. Japan set the world record for the fastest train at 581km per hour.The Japanese bullet train can move at speed in excess of 300 kilometres per hour.
you move your legs really fast!
Euglena move fast and amoeba move slower than Euglena
it moves with speed up to 54 miles
Speed refers to velocity, whereas agility refers to coordination.
Recoil is the reaction of speed x mass of the bullet, producing recoil (reaction) consisting of speed (of the rifle moving) x mass (of the rifle). If one rifle has a greater mass than another, the recoil is trying to move the larger mass, and cannot move it as fast. This is why you can hit a golf ball much further than you can hit a bowling ball. Difference in mass.
To move fast could be to speed, hurry, hasten, rush, hie, shoot, or dart (as in He darted for the door).