SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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velocity also tells acceleration
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speed is always and average
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velocity also tells direction
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speed is only useful for fast-moving objects
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Detailed explanation-1: -Velocity tells you how fast and gives a direction. Speed only tells how fast. Speed is a vector and velocity is a scalar. Speed tells you how fast and gives a direction.
Detailed explanation-2: -In physics, velocity is more important than speed because it tells you more about the object’s motion. Always, the more you know, the better. Again, speed has no direction, velocity does. Speed is the magnitude of the velocity.
Detailed explanation-3: -When evaluating the velocity of an object, one must keep track of direction. It would not be enough to say that an object has a velocity of 55 mi/hr. One must include direction information in order to fully describe the velocity of the object.
Detailed explanation-4: -It would be important to know the velocity because velocity includes direction. Knowing only the speed of a tornado would not tell the direction that the tornado is travelling. Knowing a tornado’s direction of travel would allow people to avoid or escape its path.
Detailed explanation-5: -Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement.