Speed, Velocity or Acceleration
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Speed is the distance traveled per unit of time. The formula for speed is s=d/t. Speed is measured in mph or km/hr.
An example of speed is a car being driven 45 miles per hour.
Velocity is the speed and direction of a moving object. The formula for velocity is v=a/t.
For example, "5 meters per second" is a scalar, whereas "5 meters per second east" is a vector.
Acceleration is the rate of change of velocity of an object with respect to time. The formula is a=vf−vi/Δt. The answer could either be positive or negative.
A meteor's speed is 10,000 m/s. After 1 minute, it is 5,000 m/s. What is the meteor's acceleration?
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