Falling objects drop with an average acceleration of 98 m/s2. If an object falls from a tall building how long will it take before it reaches a speed of 49 m/s?

Below

Explanation:

Here are the values we are given :

a = 9.8 m/s^2

vf = 49 m/s

We can use this formula to find how long it will take :

     vf = vi + at

     49 = 0 + 9.8 t

     49 = 9.8 t

       5 = t

Therefore it takes the object 5 seconds to reach 49 m/s

Hope this helps!

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