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1. |
A stone is projected vertically up to reach a maximum height h. The ratio of its K.E. to P.E, at a height\[\frac{4h}{5}\]will be |
A. | 5 : 4 |
B. | 4 : 5 |
C. | 1 : 4 |
D. | 4 : 1 |
Answer» D. 4 : 1 | |