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1. |
A ball of mass 2kg and another of mass 4kg are dropped together from a 60feet tall building. After a fall of 30 feet each towards earth, their respective kinetic energies will be in the ration of ___________ |
A. | 2:1 |
B. | 1:4 |
C. | 1:2 |
D. | 1: 2 |
Answer» D. 1: 2 | |