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Constant speed oof a train is 54 kim h ^...

Constant speed oof a train is `54 kim h ^(-1).` What is its speed in unit `'ms ^(-1).?`

A

`15 ms ^(-1)`

B

`90 ms ^(-1)`

C

`1.5 ms ^(-1)`

D

`9 ms ^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Speed `= 54 (km)/(h) =((54 xx 1000)m)/( (3600)s )= 15 ms ^(-1)`
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