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shepuryov [24]
3 years ago
8

Kara drops a rock from the edge of a cliff and it takes 7.00 s for the rock to reach the ground. What is the cliff’s height?

Physics
1 answer:
stepan [7]3 years ago
5 0

Answer:

h = 204.1 m

Explanation:

Given that,

Time taken to reach the ground, t = 7 s

We need to find the height of the cliff. We can find it using second equation of kinematics as follows :

h=ut+\dfrac{1}{2}at^2

Here,

u = 0 (at rest initially)

a = g

So,

h=\dfrac{1}{2}gt^2\\\\h=\dfrac{1}{2}\times 9.8\times 7^2\\\\h=204.1\ m

So, the cliff's height is 204.1 m.

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