
Can the speed of a body be negative?
Answer
506.7k+ views
1 likes
Hint: Speed is a scalar quantity and the scalar quantity are quantities which are having only magnitude, the scalar quantities do not have the direction. So, when there is no mention of the direction of a given quantity then the chances of that quantity to be negative is likely to be impossible.
Complete answer:
The speed of a body can never be zero and this can be justified with the help of the two reason:
One reason is that it is a scalar quantity and scalar quantity cannot be negative, and the explanation is done in the hint.
Second reason can be justified by its formula. The formula for the speed is total distance travelled divided by the total time taken. i.e.,
,
And we all know that the distance is a scalar quantity and distance cannot be negative. It can be zero but it cannot be negative, and also the time can never be zero or negative. So, the speed is the ratio of two quantities which are non-negative.
Hence the speed of a body cannot be negative in any condition.
Note:
One major difference between the distance and the displacement can be that the distance cannot be negative while the displacement can have both positive value and negative value as well as zero. This is because of the reason that the distance is a scalar quantity and displacement is a vector quantity. Displacement has both magnitude and direction and can have both values of positive and negative according to the direction of motion of the object from its reference point.
Complete answer:
The speed of a body can never be zero and this can be justified with the help of the two reason:
One reason is that it is a scalar quantity and scalar quantity cannot be negative, and the explanation is done in the hint.
Second reason can be justified by its formula. The formula for the speed is total distance travelled divided by the total time taken. i.e.,
And we all know that the distance is a scalar quantity and distance cannot be negative. It can be zero but it cannot be negative, and also the time can never be zero or negative. So, the speed is the ratio of two quantities which are non-negative.
Hence the speed of a body cannot be negative in any condition.
Note:
One major difference between the distance and the displacement can be that the distance cannot be negative while the displacement can have both positive value and negative value as well as zero. This is because of the reason that the distance is a scalar quantity and displacement is a vector quantity. Displacement has both magnitude and direction and can have both values of positive and negative according to the direction of motion of the object from its reference point.
Recently Updated Pages
Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Social Science: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Chemistry: Engaging Questions & Answers for Success

Trending doubts
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths

Gautam Buddha was born in the year A581 BC B563 BC class 10 social science CBSE

Fill the blanks with proper collective nouns 1 A of class 10 english CBSE

Why is there a time difference of about 5 hours between class 10 social science CBSE

What is the median of the first 10 natural numbers class 10 maths CBSE

Change the following sentences into negative and interrogative class 10 english CBSE
