1.

The velocity of a body at any instant is 10 m/s. After 5 sec, velocity of the particle is 20 m/s. The velocity at 3 seconds before is

A.  8 m/sec              
B.  4 m/sec  
C.  6 m/sec          
D.         7 m/sec
Answer» C.  6 m/sec          


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