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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

Respuesta :

Dadle1

Answer:

5 seconds

Explanation:

Acceleration = (final velocity - initial velocity) ÷ time

[tex]a = \frac{v - u}{t} [/tex]

[tex]9.8 = \frac{49 - 0}{t} [/tex]

[tex]9.8 = \frac{49}{t} [/tex]

[tex]9.8t = 49[/tex]

[tex]t = \frac{49}{9.8} [/tex]

[tex]t = 5[/tex]

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