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Pani-rosa [81]
3 years ago
11

A rock is dropped from a bridge to the water below. It takes 3.2 s for the rock to hit the water. Find the speed (in m/s) of the

rock as it hits the water. How high (in m) is the bridge above the water
Physics
1 answer:
Eduardwww [97]3 years ago
8 0
Kinematic equations 
v=at. v=9.81x3.2 v=32m/s (approx)
v^2=2axheight.
32x32/2x10=height
16x32/10 = height
height is approx 48metres
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