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A stone is dropped from a bridge and it reaches the ground in 4 seconds. Find the height of bridge

A stone is dropped from a bridge and it reaches the ground in 4 seconds. Find the height of bridge
 

Grade:11

1 Answers

Archisha Ranjan
37 Points
2 years ago
As the ball is fall freely, hence initial velocity is zero. Simple physics equation is used to find the height h of the bridge;
 
h=u.t + 0.5.g.t^2
 
= 0 + 0.5x9.8x4^2
 
= 78.4m
 
Thanks for A2A.

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