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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

Answers (1)

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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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