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Question
The velocity of a particle depends upon as v = a + bt + ct2 ; if the velocity is in m/sec, the unit of a will be 
Options:
A .  m/sec
B .  m/sec2
C .  m2/sec  
D .  m/sec3
Answer: Option A
:
A
Quantities of similar dimensions can be added or subtracted so unit of awill be same as that of velocity.

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