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Paula drops a pebble into the ocean from a 120ft high cliff. Use the formula t=hβˆ’βˆ’βˆš4 to find how many seconds it takes for the pebble to reach the ocean. Round your answer to the nearest tenth of a second.

Respuesta :

Answer:

2.7 seconds

Step-by-step explanation:

We are asked to find how many seconds it takes for an object to fall from a height of 120ft. We will use the given formula, t=hβˆ’βˆ’βˆš4. Substituting h=120, we find

t=120βˆ’βˆ’βˆ’βˆš4=2.7

So, the pebble reaches the ocean after 2.7 seconds.

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