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## 3. Daniel stands on a bridge over a river. He drops a coin and notes that the coin takes 3 s to reach the river below. He must b

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## Answers ( )

Answer:45 mExplanation:Initial velocity of the coin = 0 m/s (since he dropped it from his hands)

time spent in falling – 3 sec

distance s = ?

using

s = ut + g

where

s is the distance the stone fell

u is the initial velocity

t is the time spent falling

g is acceleration due to gravity = 10 m/s^2 (positive downwards)

substituting values, we have

s = (0 x 3) + (10 x )

s =

45 m