Question

what is speed class 9 physics

Answer 1

Answer:

In everyday use and in kinematics, the speed of an object is the magnitude of the change of its position; it is thus a scalar quantity. 

SI unit: m/s, m s−1

Common symbols: v

Dimension: L T−1

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Answer 2

Explanation:

Speed is the distance travelled in a given time.

Speed = Distance / Time = d/t

It is a scalar quantity as it has only magnitude. It doesn't have any direction.

It is expressed in m/sec or km/hr in S.I system.

It is expressed in cm/sec in C.G.S system..

Dimension of Speed = LT-1

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