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    				| 1. | A car start from rest and achieves a speed of 54 km/h in a second find its acceleratoin | 
| Answer» ation is change in velocity with time..so, a=?since it's starts from rest so its initial velocity will be ZERO and it is GIVEN that final velocity is 54km/hr==15m/sso..a=(0–15)/3-15/3=-5is the acceleration or there is retardation...PLEASE mark me brain mark list | |