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a person drops a ball over a river ,the ball strikes the water surface after 2 seconds the height of the bridge above the water surface is?

a person drops a ball over a river ,the ball strikes  the water surface after 2 seconds the height of the bridge above the water surface is?

Grade:12th pass

1 Answers

Prateeti Sengupta
28 Points
8 years ago
h=ut+1/2 gt2
= ½ * 9.8* 4 {u=0, ut=0}
=19.6 m

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