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A ball is thrown vertically downward with a velocity of 20 m/s from the top if a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is: ( g = 10m/s)
Option: 1  360 m
Option: 2 340 m
Option: 3  320 m  
Option: 4 300 m

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v^2-u^2=2as\\ (80)^2-(20)^2=2 \times 10 \times h\\ h=300 m

Posted by

Deependra Verma

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