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Lana71 [14]
3 years ago
8

falling objects drop with an average acceleration of 9.8m/sec/sec. if an object falls from a tall building how long will it take

before it reaches a speed of 49m/sec
Physics
1 answer:
sveta [45]3 years ago
8 0

Answer:

5 seconds

Explanation:

<em>Acceleration = (final velocity - initial velocity) ÷ time</em>

<em>a =  \frac{v - u}{t}</em>

<em>9.8 =  \frac{49 - 0}{t}</em>

<em>9.8 =  \frac{49}{t}</em>

<em>9.8t = 49</em>

<em>t =  \frac{49}{9.8}</em>

<em>t = 5</em>

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