Velocity is defined by magnitude and direction. Initial velocity is speed and direction at beginning of travel. Proper equation selection crucial for solving physics problems
Batman ranks 93rd, Superman 65rd, and Wonder Woman 71st. Batman's Nightwing form matches his combat skills. Aquaman's trident can cut through Superman's skin. Deathstroke ranks 92nd, possibly more skilled than Batman
Peregrine falcon is fastest bird, reaching over 300 km/h diving speed. Cheetah is fastest land animal, running at 29 m/s in straight line. Pronghorns can reach 60 mph in good conditions, 50 mph normally. Ostriches have highest reliably measured running speed of 61 km/h
Sonic is naturally fast, born with incredible speed. Flash gained Speed Force powers after being struck by lightning. Flash reached 13 trillion times speed of light at one point
Peregrine falcon can reach speeds exceeding 320 km/h (200 mph) in dives
Speed is the magnitude of position change over time, a non-negative scalar quantity. Speed is the rate at which an object covers distance. Galileo first defined speed as distance covered per unit of time