Answer:
Velocity is a vector quantity ( having direction and magnitude) while speed is a scalar quantity (do not need a direction of motion).
Velocity is defined as the distance travelled by an object in per unit time and speed is defined as the distance traveled by an object.
Velocity and speed for 100 -m sprint is same because the race track is uni-directional (straight side) and person will move with the same speed in the same direction.
Whereas, 400-meter sprint is a race that is one complete lap around a racetrack which allows the race in different speeds as the direction is different because of the turns.
Answer: Sample Response: In the 100-m sprint, the displacement is 100 meters and the distance is 100 meters. This means speed and velocity are the same for the 100-m sprint. In the 400-m sprint, the distance is 400-m, but the runners stop at the same place they start so the displacement is zero. Zero displacement means zero velocity.
(make sure it is not word for word)
Explanation:
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