Question

guys tell this
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Answer 1

Answer:

Explanation:

1. Speed is the distance traveled by an object where as, velocity is distance traveled by an object per unit time in a particular direction. Speed is a scalar quantity where as velocity is a vector quantity.
2. so when the body moves in a straight line the average velocity is equal to average speed. Average velocity would be equal to average speed when the total distance travelled equals the net displacement of a particle. This happens when a particle moves along a straight line in a fixed direction.
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NOTE:speed of light is 3*10^8 m/s hence we take time in seconds and get the distance in meters.