can the speed of a body be negative
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no the speed of a body can't be negative
RoyalShobhit:
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Short answer:-
No, speed cannot be negative. Since speed is a scalar quantity and doesn’t have a direction. Velocity on the other hand, can be negative.
Long answer:-
Rate of change of distance is called speed. Speed = distance/time
To make speed negative atleast one of the 2 involved terms has to be negative. That is either distance has to be negative, or time.
Time can never be negative because time always increases. It always goes forward. There is no way (within the limits of our current technology) to rewind time.
Distance cannot be negative either (although displacement can be). Basically if you move in any direction, no matter how little you move, you’ve moved a certain distance. And that distance is always positive.
Therefore, speed, which is obtained by division of two positive terms, is always positive.
That is the mathematical proof however.
To look at the logical proof, try to imagine a body moving with a negative speed. I mean, that just doesn’t make sense.
A body at rest has 0 speed
If that body starts moving in any direction it obtains a particular positive speed!
Hope I was able to answer all your queries. :)
No, speed cannot be negative. Since speed is a scalar quantity and doesn’t have a direction. Velocity on the other hand, can be negative.
Long answer:-
Rate of change of distance is called speed. Speed = distance/time
To make speed negative atleast one of the 2 involved terms has to be negative. That is either distance has to be negative, or time.
Time can never be negative because time always increases. It always goes forward. There is no way (within the limits of our current technology) to rewind time.
Distance cannot be negative either (although displacement can be). Basically if you move in any direction, no matter how little you move, you’ve moved a certain distance. And that distance is always positive.
Therefore, speed, which is obtained by division of two positive terms, is always positive.
That is the mathematical proof however.
To look at the logical proof, try to imagine a body moving with a negative speed. I mean, that just doesn’t make sense.
A body at rest has 0 speed
If that body starts moving in any direction it obtains a particular positive speed!
Hope I was able to answer all your queries. :)
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