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Chapter 9: Q. 432 (page 1109)

Gravity : While putting up holiday decorations, Renee dropped a light bulb from the top of a 64 foot tall tree. Use the formula t=h4to find how many seconds it took for the light bulb to reach the ground.

Short Answer

Expert verified

It will take 2 seconds for the light bulb to hit the ground.

Step by step solution

01

Step 1. Given Information :

The light bulb have been dropped by Renee from the top of a 64 foot tall tree,

Formula :t=h4

02

Step 2. Assign the value to the equation :

Let t be the no of seconds in the formula,

h is the given height,

Substitute in the given information in the formula :

t=644t=(8)24t=84=2seconds.

03

Step 3. Checking the solution:

Here time t = 2,

t=6442=6442=(8)242=84=22=2HenceProved.

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