Velocity

The velocity of an object is simply its speed in a particular direction. Since velocity is defined as a vector, both speed and direction are required to define it.

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2004 NASA's hypersonic jet ''ScramJet'' breaks a record by reaching a velocity of about 7,000 mph in an unmanned experimental flight. It obtains a speed of Mach 9.6, almost 10 times the speed of sound.

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The velocity of an object is simply its speed in a particular direction. Since velocity is defined as a vector, both speed and direction are required to define it.