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    				| 1. | 
                                    A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is :-A. 4.0 m/sB. 5.0 m/sC. 5.5 m/sD. 4.8 m/s | 
                            
| Answer» Correct Answer - A | |