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    				| 1. | A stone is thrown vertically upward from the top of a 59.4m cliff. Ho long is the stone in air. 0.1min 0.6min 0.6sec 4sec | 
| Answer» :- While going upward body doesn't have INITIAL VELOCITY, it has final velocity only. USING second equation of MOTION,S = ut + 1/2 gt²59.4 = 1/2 × 10 × t² t² = 11.88 t = √11.88 t = 3.44 sHence,The STONE was in air = t = 3.44 s | |