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Can the speed of a particle ever be negative? If so, give an example; if not, explain why.

Can the speed of a particle ever be negative? If so, give an example; if not, explain why.

Grade:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
9 years ago
The speed of the particle can never be negative.
This can be seen from the definition of the speed given as:
speed = \frac{distance travelled}{time taken}
The dependency of speed on the distance travelled by the particle and the time it takes to travel the distance assures that the speed is non-negative because neither the value of distance can be negative nor can be the value of time it takes to travel that distance.

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